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A POS (point-of-sale) system is the hardware and software combination a business uses to process sales, track inventory, and print receipts at checkout. Rather than a cash register alone, a modern POS system typically pairs a touchscreen terminal with a barcode scanner and receipt printer, all working together to ring up a sale and generate a customer receipt in one motion.

Who Actually Needs One?

Any retail shop, mini market, or small business handling regular in-person sales benefits from moving off a manual cash register or handwritten ledger. When the POS software is configured for inventory management, sales can update stock records automatically and provide real-time sales information — a meaningful accuracy improvement over manually reconciling receipts at the end of the day.

Core Components of a POS Setup

POS Terminal. The central hardware — a touchscreen computer running your POS software, handling checkout and reporting. CompuOne’s PANDA Heron is one example, built around an Intel i3 processor with a 15″ touchscreen and the USB, RS232, and LAN ports needed to connect scanners and printers. Terminal specs vary by model and business volume — browse the full POS systems and terminals range for other configurations.

Barcode Scanner. Speeds up checkout and reduces manual entry errors versus typing in prices or SKUs by hand. CompuOne’s PANDA scanner range covers both 1D handheld models for straightforward retail use and 2D models that also read damaged or angled barcodes. The right choice depends on your barcode types and scan volume — see the full barcode scanner range for the full lineup.

Receipt Printer. Thermal receipt printers use heat rather than ink, meaning no cartridges to replace — just paper rolls. For the full breakdown of thermal printing, paper sizes, and how to choose one for your setup, see our dedicated receipt printer guide.

Cash Drawer and POS Software. A complete POS setup may also include a cash drawer and POS software layered on top of the terminal hardware. Compatibility between a specific cash drawer, printer, and software depends on the exact hardware and software combination in use — confirm compatibility for your specific setup before purchasing rather than assuming universal compatibility.

POS Setups by Business Type

• Mini markets and small retail shops: a single terminal, one barcode scanner, and a receipt printer typically covers checkout needs.
• Larger retail stores: may need multiple terminals or a higher-throughput scanner if scan volume is high throughout the day.
• Small businesses and service counters: often need less scanning volume but still benefit from a terminal and printer for clean, itemized receipts and basic sales tracking.

How to Choose the Right POS System

Start with your actual transaction volume and space, not the most feature-rich terminal available. A single counter with moderate daily traffic doesn’t need the same processing power as a high-volume multi-till setup. Match the terminal’s port selection (USB, RS232, LAN) to what you’re actually connecting — a scanner, a printer, and potentially a customer display.

POS Hardware vs POS Software

The terminal is the hardware; the software running on it is what actually manages your inventory, pricing, and sales records. These are frequently separate purchasing decisions — the terminal needs to run Windows or a compatible OS capable of hosting your chosen POS software. See our Windows 11 guide for why keeping the operating system supported and updated matters on business computers.

Does a POS System Need Internet?

Not necessarily for basic checkout — many systems can process a sale and print a receipt offline. Internet connectivity matters for cloud-based inventory syncing, remote reporting, or card payment processing depending on your specific software and payment provider. A stable connection still matters for these functions — see our router guide if your current connection drops during busy periods.

What Happens If the Power Goes Out?

Without backup power, a power outage can interrupt an active sale and cause the terminal to shut down unexpectedly, risking data loss on that transaction. A properly sized UPS can keep the POS equipment powered during a short outage, giving you time to complete the transaction, where supported by the POS system, or shut the system down safely. See our UPS sizing guide for calculating the right capacity for your specific setup.

Common POS Mistakes

• Buying a terminal without confirming it has enough ports for your actual peripherals.
• Skipping power backup, then losing a sale mid-transaction during an outage.
• Choosing a barcode scanner without checking it handles the barcode types you actually use (1D vs 2D).
• Assuming cash drawer and printer compatibility without confirming with the specific hardware/software combination.

POS System Buying Checklist

Before buying, confirm:

• Number of checkout stations needed
• Scanner requirements (1D vs 2D, scan volume)
• Receipt printer connection type (USB, LAN)
• Available USB/RS232/LAN ports on the terminal
• POS software and OS compatibility
• Internet/network requirements
• UPS/power backup requirements
• Future expansion needs (additional stations, scanners)

Setup Considerations

The right setup size depends entirely on your transaction volume and space — a single-terminal setup suits many small shops, while busier retail locations may need multiple stations. CompuOne’s team can help size a setup to your actual daily volume rather than guessing.

How CompuOne’s POS Ecosystem Fits Together

Terminal, scanner, and printer are the core three components; power protection and networking support them from underneath. Browse the full POS range, and reach out if you’re not sure which combination fits your specific business.

Frequently Asked Questions

What is a POS system?
A POS (point-of-sale) system combines a touchscreen terminal, barcode scanner, and receipt printer to process sales and track inventory at checkout, replacing a manual cash register and paper records.

What equipment do I need for a POS system?
At minimum, a terminal and a way to print receipts. Many retail setups add a barcode scanner for speed and accuracy; a cash drawer is common but its compatibility depends on your specific hardware and software combination.

What POS system is best for a small shop?
A single terminal with a barcode scanner and receipt printer covers many small shop needs — the specific model depends on your transaction volume and how many ports you need for peripherals.

Do I need a barcode scanner?
Not strictly, but it significantly speeds up checkout and reduces manual pricing errors compared to typing in each item by hand.

Does a POS system need internet?
Not for basic offline checkout, but internet matters for cloud inventory syncing, remote reporting, or card payment processing depending on your software and payment provider.

What happens if the power goes out?
Without backup power, an active sale can be interrupted and the terminal can shut down unexpectedly. A properly sized UPS can keep equipment powered during a short outage, allowing the transaction to complete where supported, or the system to shut down safely.

Screen size shapes your daily experience more directly than almost any other monitor spec — too small and you’re squinting or constantly switching windows; too large for your desk and you’re straining your neck or losing detail sharpness. Here’s how to actually match size to your space and use case.

Screen Size Comparison at a Glance

24.5″: The Compact, Practical Choice

The MSI PRO MP252L at 24.5″ — confirmed against MSI’s official specifications — is genuinely the most practical size for smaller desks or offices where space is tight. At FHD resolution, text and images stay sharp without needing to sit unusually close, and it fits comfortably even in compact home office setups.

27″: The Middle Ground

The MSI PRO MP272L steps up to 27″, giving noticeably more visual space for side-by-side windows or spreadsheets without requiring a significantly larger desk footprint. This is the size most people land on when 24″ starts feeling cramped but a 32″+ screen feels excessive for their desk.

32″: More Immersion, More Desk Space

The Samsung S32D392GAM at 32″ — confirmed against Samsung’s official product page — uses a 1500R curve to keep the larger screen comfortable to view without needing to turn your head as much at the edges. This size genuinely needs more desk depth to sit at a comfortable viewing distance; measure your desk before committing to this size.

34″ Ultrawide: Replacing a Dual-Monitor Setup

The Samsung C34G55TWWM at 34″ — verified against Samsung’s spec sheet — is genuinely wide enough to replace a traditional dual-monitor setup for many users, eliminating the bezel gap in the middle. Its 1000R curve is tighter than the 32″ model’s, appropriate for the extra width. This size demands the most desk space of the range, both in width and often depth for comfortable viewing distance.

Measuring Your Desk Before Buying

Before choosing a size, it’s worth actually measuring your desk rather than guessing. A comfortable viewing distance is generally an arm’s length away; if a 32″ or 34″ screen would sit closer than that on your specific desk, a 24.5″ or 27″ option may actually be more comfortable day to day, regardless of the appeal of a larger screen.

Which Size Fits Your Situation?

• Small desk or tight office: 24.5″ — MSI MP252L.
• General productivity, moderate desk space: 27″ — MSI MP272L.
• Want more immersion, have the desk depth: 32″ curved — Samsung S32D392GAM.
• Replacing dual monitors, gaming, deep desk available: 34″ ultrawide — Samsung C34G55TWWM.

Frequently Asked Questions

Is a bigger monitor always better?
No — a screen too large for your desk or viewing distance can be uncomfortable rather than beneficial. Match the size to your actual desk space and how far you sit from it.

Can a 34″ ultrawide really replace two monitors?
For many multitasking workflows, yes — you get continuous screen space without a bezel gap in the middle. Some workflows built specifically around separate physical displays may still prefer true dual monitors.

Do larger monitors need a monitor arm?
Not strictly, but larger and heavier screens — especially curved ultrawide models — often benefit from a VESA-compatible arm for easier positioning and desk space management.

Next Steps

This is one piece of choosing a monitor — see the full Monitor Buying Guide for panel type, refresh rate, and resolution comparisons. Browse the full monitor range to see current stock.

Resolution determines how sharp and detailed your screen looks, but jumping to the highest number available isn’t automatically the right call — it affects what hardware you need to drive it, and how much practical benefit you’ll actually notice at your screen size and viewing distance. Here’s how to think about it properly.

What Resolution Actually Means

Resolution is the number of pixels your screen displays, written as width × height. More pixels means finer detail and sharper text and images — but the benefit depends heavily on screen size and how close you sit to it. The same resolution looks sharper on a smaller screen than a larger one, since the pixels are packed more densely.

Resolution Tiers Compared

Real Examples from CompuOne’s Range

The MSI PRO MP252L, MP272L, and Samsung S32D392GAM all run at FHD (1920×1080) — confirmed against their official specifications — a resolution that stays sharp and easy to drive across 24.5″ to 32″ screen sizes for everyday productivity.

The Samsung C34G55TWWM steps up to Ultra WQHD (3440×1440) — verified against Samsung’s official spec sheet — giving noticeably more screen real estate on its 34″ ultrawide canvas, useful for multitasking or immersive gaming without demanding the GPU horsepower that full 4K would require.

Is 4K Worth It?

4K delivers genuinely sharper detail, particularly noticeable on larger screens or when doing detail-critical work like photo editing or reviewing high-resolution footage. The tradeoff is real: 4K demands considerably more from your graphics card to run smoothly, especially in gaming, and the difference is much less noticeable on smaller screens or from a typical desk viewing distance. It’s a genuine upgrade for the right use case, not a universal must-have.

Resolution vs Screen Size: Why They’re Linked

The same resolution feels different depending on screen size. 1080p on a 24.5″ screen looks crisp and detailed; the same 1080p stretched across a much larger screen would look noticeably softer, since the same number of pixels is spread over more physical area. This is why CompuOne’s larger screens — the 32″ Samsung and 34″ ultrawide — step up to VA panels with either matching or higher resolution than the smaller IPS models, keeping detail sharp at the larger size.

Which Resolution Should You Choose?

• General office work, budget-conscious build: 1080p — the MSI MP252L, MP272L, or Samsung S32D392GAM.
• Multitasking, immersive gaming, more screen real estate: 1440p/WQHD — the Samsung C34G55TWWM ultrawide.
• Detail-critical creative work or a capable gaming GPU you want to fully use: 4K, provided your graphics hardware can drive it comfortably.

Frequently Asked Questions

Do I need a powerful graphics card for 1440p?
Less demanding than 4K, but still more than 1080p — a mid-range modern GPU generally handles 1440p well for most games and tasks. Check specific game requirements if gaming performance matters to you.

Is 4K worth it on a 24-27″ screen?
The benefit is less noticeable at smaller screen sizes and typical desk viewing distances — 4K’s sharpness advantage becomes more apparent on larger screens or when viewing content up close.

What’s the difference between QHD and WQHD?
QHD (2560×1440) is the standard 16:9 version; WQHD refers to the wider ultrawide variant like 3440×1440, offering extra horizontal screen space at the same vertical resolution.

Next Steps

This is one piece of choosing a monitor — see the full Monitor Buying Guide for panel type, refresh rate, and screen size comparisons. Browse the full monitor range to see current stock.

Refresh rate is one of the most heavily marketed monitor specs, and also one of the most misunderstood. More Hz isn’t automatically better for every use — here’s what it actually changes, and which tier genuinely fits different needs.

What Refresh Rate Actually Means

Refresh rate measures how many times per second your monitor redraws the image, measured in Hz. A higher number means smoother-looking motion — less blur when scrolling, and cleaner motion in fast-moving video or games. It’s a separate spec from resolution or response time, though all three affect how motion looks together.

Refresh Rate Tiers Compared

Real Examples from CompuOne’s Range

The MSI PRO MP252L and MP272L run at 100Hz with 1ms MPRT response time — verified against MSI’s official specifications — a noticeable step up from the 60Hz baseline that’s still common on budget and older monitors, without the premium price of a dedicated gaming display.

At the higher end, the Samsung C34G55TWWM reaches 165Hz with 1ms MPRT response time and AMD FreeSync Premium — verified against Samsung’s official spec sheet — built specifically for fast-paced gaming where every millisecond of input lag matters. The Samsung S32D392GAM sits at 100Hz, matching the MSI models’ tier while adding VA contrast and a curved screen.

Does Higher Refresh Rate Matter for Office Work?

Honestly, the difference is real but modest for typical office tasks — 100Hz makes scrolling and window movement feel noticeably smoother than 60Hz once you’ve used it, but it isn’t essential for email, documents, or spreadsheets. Where 100Hz+ genuinely pays off even outside gaming is in video review work or any task involving frequent scrolling through long documents or timelines.

Refresh Rate and FreeSync/Adaptive Sync

A high refresh rate works best paired with adaptive sync technology (AMD FreeSync or similar), which matches the monitor’s refresh rate to your graphics card’s actual frame output — reducing screen tearing and stutter. The Samsung C34G55TWWM includes FreeSync Premium for exactly this reason; without adaptive sync, a high refresh rate monitor can still show tearing if your GPU’s frame rate doesn’t match the display’s refresh rate.

Which Refresh Rate Should You Choose?

• General office work, browsing, documents: 60Hz is genuinely sufficient, though 100Hz (MSI MP252L/MP272L) is a pleasant, noticeable upgrade if budget allows.
• Everyday productivity with some gaming or video: 100Hz — the MSI models or Samsung S32D392GAM.
• Serious or competitive gaming: 165Hz with adaptive sync — the Samsung C34G55TWWM.

Frequently Asked Questions

Can my graphics card actually output enough frames to use a 165Hz monitor?
This depends entirely on your GPU and the specific game or task — a 165Hz monitor won’t force higher frame rates on its own. Check whether your system can realistically produce frame rates near that number in the applications you care about.

Is there a real visual difference between 100Hz and 165Hz?
Yes, though it’s more noticeable in fast-paced gaming than in general use. For office work and everyday browsing, the jump from 60Hz to 100Hz is more noticeable than the jump from 100Hz to 165Hz.

Do I need FreeSync if I have an NVIDIA graphics card?
AMD FreeSync-certified monitors often also work with NVIDIA GPUs that support adaptive sync, but compatibility can vary by specific hardware — confirm compatibility with CompuOne or check your GPU’s adaptive sync support before assuming.

Next Steps

This is one piece of choosing a monitor — see the full Monitor Buying Guide for panel type, screen size, and curved vs flat comparisons. Browse the full monitor range to see current stock.

The panel type inside a monitor shapes how it looks and feels more than almost any other spec — but “IPS,” “VA,” and “TN” get thrown around without much explanation of what they actually change. Here’s what each one really does, and which one fits different kinds of use.

The Three Panel Types, Simply Explained

• IPS (In-Plane Switching) — built for color accuracy and wide viewing angles. The image stays consistent and undistorted even when viewed from the side, which is why IPS has become the standard choice for general productivity and color-sensitive work.
• VA (Vertical Alignment) — built around deeper contrast and darker blacks. VA panels typically show more depth in dark scenes than IPS, at some cost to viewing angle consistency compared to IPS.
• TN (Twisted Nematic) — the oldest and simplest LCD technology, generally offering the fastest response times and lowest cost, but with narrower viewing angles and weaker color accuracy than IPS or VA.

Panel Comparison at a Glance

Real Examples from CompuOne’s Range

The MSI PRO MP252L uses an IPS panel with a verified 178°/178° viewing angle and 1ms MPRT response time — a clear example of IPS prioritizing consistent color and viewing angle for office and everyday productivity use.

On the VA side, the Samsung S32D392GAM (32″, 100Hz, 4ms GTG) and Samsung C34G55TWWM (34″, 165Hz, 1ms MPRT, FreeSync Premium) both use VA panels — the deeper contrast this technology offers is a natural fit for gaming and immersive viewing, which is exactly how both models are positioned.

Panel Type Isn’t the Whole Story

It’s worth being clear about this: panel type is one factor among several, not a single score that determines overall monitor quality. Two monitors with the same panel type can perform quite differently depending on the specific display panel used, the refresh rate, calibration, and build quality. Panel type tells you the general character of the image — not the full picture on its own.

Which Panel Should You Choose?

• Photo editing, design work, or a monitor multiple people will view from different angles: IPS — like the MSI PRO MP252L or MP272L.
• Gaming, movies, or anywhere deep contrast and dark-scene detail matter: VA — like the Samsung S32D392GAM or C34G55TWWM.
• Absolute budget priority or older competitive gaming setups prioritizing raw response time above all else: TN, though this is a shrinking category as IPS and VA panels have closed much of the response-time gap in recent years.

Frequently Asked Questions

Is IPS always better than VA?
No — IPS wins on viewing angle consistency and color accuracy; VA wins on contrast and black depth. Which is “better” depends entirely on what you’re using the monitor for.

Is TN panel technology outdated?
It’s the oldest of the three, but still exists in the market primarily for its cost and raw response time. IPS and VA panels have narrowed the response-time gap significantly, which is part of why TN has become less common in newer monitor lineups.

Does panel type affect refresh rate?
Not directly — refresh rate is a separate spec. Both the IPS-based MSI models and the VA-based Samsung models in CompuOne’s range reach 100Hz or higher, showing that high refresh rates exist across panel types.

Can I tell panel type just by looking at a monitor?
Not reliably — panel type is a manufacturing spec, not something visually obvious at a glance. Always check the listed panel type rather than assuming from appearance alone.

Next Steps

This is one piece of choosing a monitor — see the full Monitor Buying Guide for refresh rate, screen size, and curved vs flat comparisons. Browse the full monitor range to see current stock.

More megapixels means sharper footage, but it also means more storage used and more network bandwidth — so the highest resolution available isn’t automatically the right choice for every camera position. Here’s how to actually decide.

What Resolution Actually Changes

Resolution determines how much detail is captured, which matters most when you need to zoom into footage after the fact — reading a license plate, identifying a face, or making out a detail from across a room. For general activity monitoring where you just need to see that something happened, lower resolution is often enough.

A Real Example

CompuOne carries the UNIVIEW IPC3618LE-ADF28KC-DL, an 8MP (3840×2160) camera with a 2.8mm fixed lens, Color Hunter low-light color technology, and AI-based motion detection. This is the resolution tier worth using on your entrance or checkout counter — the spot where you’d actually want to identify a face or read details clearly if something happened.

Resolution and Storage: The Tradeoff

Higher resolution footage takes up more storage space on your NVR for the same recording duration — an 8MP camera generates a substantially larger file than a 2MP camera recording the same scene. This doesn’t mean avoid high resolution; it means factor it into your NVR storage planning, especially if you’re running several high-resolution cameras continuously. See our guide on NVR and storage sizing for the full breakdown.

A Practical Approach: Mixed Resolution

You don’t need every camera on the same resolution. A common, cost-effective approach is using higher resolution at entrances and checkout points — where identification detail matters — and lower resolution for general area coverage, like a stockroom or a wide parking area where you mainly need to confirm activity occurred.

Frequently Asked Questions

Is 8MP overkill for a small shop?
Not necessarily — it depends on the camera’s job. An 8MP camera at the entrance or till is genuinely useful for identification. An 8MP camera covering an empty stockroom corner is likely more resolution than the position needs.

Does higher resolution mean better night vision?
Not directly — resolution and night vision (infrared range and sensitivity) are separate specifications. A high-resolution camera with weak night vision will still perform poorly in the dark.

Can I upgrade camera resolution later without replacing the NVR?
This depends on your specific NVR’s channel bandwidth and maximum supported resolution per channel — worth checking before assuming an upgrade path is available.

Buying Support Through CompuOne

Not sure which resolution fits which position in your space? Contact CompuOne with your location, property type, and the number of areas you want to monitor, and the team can help you plan the right mix. Browse the full security camera Lebanon range to see current stock.

“CCTV” gets used as a catch-all term, but there’s a real technical split underneath it that determines which recorder, cabling, and camera type you need. Getting this wrong before you buy means parts that don’t work together. Here’s the actual difference.

IP Cameras vs Analog Cameras

An IP (Internet Protocol) camera processes and digitizes video inside the camera itself, then sends that digital data over a network cable. An analog camera sends a raw video signal down a coaxial cable to a separate recorder, which does all the processing. This isn’t a minor technical detail — it changes your resolution ceiling, cabling, and which recorder you need.

NVR vs DVR: Why It’s Not a Free Choice

Your recorder has to match your camera type — an NVR won’t record an analog camera’s signal, and a DVR can’t process an IP camera’s digital stream. This is why the IP vs analog decision comes first; the recorder choice follows automatically from it.

CompuOne’s UNIVIEW camera range is IP-based, paired with NVRs — this is the more common setup for new installations today, since IP systems generally offer higher resolution and easier network-based remote viewing than analog alternatives. For specific verified models and how many cameras you actually need, see our main UNIVIEW buying guide.

Why Most New Installations Go IP

• Resolution. IP cameras commonly reach 4MP, 5MP, and 8MP; analog systems are generally capped lower.
• Single-cable installation. PoE cameras get power and data through one Ethernet cable, simplifying installation compared to running separate power and coaxial video cables.
• Network integration. IP cameras work natively over your existing network infrastructure, which analog systems require additional conversion hardware to achieve.

Frequently Asked Questions

Can I mix IP and analog cameras on one system?
Not directly on the same recorder — an NVR records IP cameras, a DVR records analog cameras. Some hybrid recorders exist in the broader market, but a standard installation uses one camera type matched to one recorder type.

Is IP always better than analog?
For new installations, IP generally offers higher resolution and easier setup. Analog can still make sense for extending an existing analog system with matching parts, rather than replacing it entirely.

Does an IP camera need an internet connection to work?
No — it needs a local network connection to your NVR to record. Internet access is only required if you want to view footage remotely from outside your local network.

Buying Support Through CompuOne

Not sure which setup fits your property? Contact CompuOne with your location, property type, and the number of areas you want to monitor, and the team can help you choose the right camera and NVR combination. Browse the full security camera Lebanon range to see current stock.

A UPS is only as reliable as its battery. A unit that beeps or shuts down almost immediately when power cuts usually isn’t broken — it’s the battery that’s worn out. Here’s what to know about UPS battery life, warning signs, and replacement.

Why UPS Batteries Wear Out

Most UPS units, including Panpower’s line-interactive range, use sealed lead-acid batteries. Like a car battery, they lose capacity gradually with age and with every discharge cycle — this happens regardless of brand or build quality, it’s simply how this battery chemistry works over time. A battery that held an hour of runtime when new may only hold a few minutes after a few years of regular use.

Signs Your UPS Battery Needs Replacing

• The UPS shuts down almost immediately when power cuts, instead of holding a charge for a reasonable stretch of time.
• The unit beeps constantly or shows a battery fault indicator on its display, even when not on battery power.
• The UPS won’t power on at all, even when plugged directly into a working outlet.
• It’s been several years since the battery was last replaced and you’re not sure of its current condition.

Battery vs Full UPS Replacement

A common mistake is replacing an entire UPS unit when only the battery has failed. On most models, including Panpower’s range, the battery is a separate, replaceable component — the electronics, display, and outlets in the UPS itself typically outlast several battery cycles. Before assuming you need an entirely new unit, it’s worth checking whether a battery replacement solves the problem, which is usually both cheaper and faster.

Extending Battery Life

• Avoid running the UPS near its maximum rated load. Heavier loads drain and stress the battery faster than lighter ones.
• Don’t leave a UPS unused and unplugged for long periods. Batteries self-discharge over time even when not in use, and a fully depleted battery left that way can degrade faster.
• Keep the unit somewhere ventilated. Excess heat shortens battery lifespan across virtually all battery chemistries.

Getting a Replacement Battery Locally

Because CompuOne stocks Panpower directly, replacement batteries for the MT1800, MT2000, and other models in the range are available locally rather than requiring an overseas order and a long wait. If you’re not sure whether your specific issue is the battery or the unit itself, CompuOne’s team can help diagnose it.

Frequently Asked Questions

How often should I replace my UPS battery?
This depends heavily on usage — how often it discharges, how heavily loaded it runs, and ambient temperature. Watching for the warning signs above is more reliable than following a fixed schedule.

Can I replace a UPS battery myself?
On many models the battery compartment is accessible, but always follow the manufacturer’s guidance or have it done by someone familiar with the specific unit — sealed lead-acid batteries need correct handling and disposal.

Buying Support Through CompuOne

Browse the full UPS Lebanon range, or read our guide on sizing a UPS correctly.

Buying a UPS that’s too small leaves you exposed the first time you actually need it. Buying one that’s oversized wastes money you didn’t need to spend. This guide walks through exactly how to size a UPS correctly, step by step.

Step 1: List Everything You’re Protecting

Start with a simple list of every device that needs to stay powered during an outage. For a typical home office: desktop PC, monitor, router. For a POS counter: terminal, receipt printer, barcode scanner, router.

Step 2: Check the Wattage of Each Device

Every device has a power label, usually on the underside or the power adapter, showing its wattage or amperage. As a rough guide:

• Desktop PC: 150–300W depending on the components
• Monitor: 20–50W
• Router or modem: 10–20W
• POS terminal with printer: roughly 60–100W combined
• Laptop charger: 45–90W (though a laptop’s own battery already provides some outage protection)

Step 3: Add It Up and Leave Headroom

Add the wattage of everything on your list. Then choose a UPS with a Watt rating comfortably above that total — not exactly matching it. Running a UPS near its maximum capacity shortens both its runtime during an outage and the working life of its battery over time.

Step 4: Understand VA vs Watts

UPS units are labeled with two numbers: VA (volt-amps) and Watts. Watts is the number that matters for sizing — it’s the real power your equipment draws, and it’s always equal to or lower than the VA figure. Don’t size against the VA number alone; check the Watts rating specifically.

Step 5: Match to a Model

For Panpower’s range specifically: a single PC and monitor fits comfortably on the 720W MT1800; a POS counter with a terminal, printer, and router fits the 1200W MT2000; multiple devices or a small server setup needs the Online Series, which scales up to 10,000VA. See the full breakdown in our Panpower UPS buying guide.

A Quick Sizing Example

A home office with a desktop PC (250W), a monitor (30W), and a router (15W) totals 295W. A UPS rated around 600–720W gives comfortable headroom above that load — which is exactly the range the MT1800 sits in.

Frequently Asked Questions

What happens if I connect more devices than my UPS is rated for?
The UPS will either shut down immediately on battery power or trip an overload protection, cutting power to everything connected. Always size with headroom, not right at the limit.

Should I include my laptop in my UPS sizing calculation?
Laptops already have their own internal battery, so they’re less critical to include — though their charger still draws some wattage while plugged in, worth accounting for if it’s connected.

Buying Support Through CompuOne

Explore the full UPS Lebanon range at CompuOne, or read our guide on choosing the right Panpower model.

A monitor is one of those purchases where the spec sheet can be genuinely confusing — panel type, refresh rate, resolution, and screen size all interact differently depending on what you actually use the screen for. This is the main guide to CompuOne’s monitor range; each section below links to a dedicated, deeper article on that specific topic.

What CompuOne Carries

Explore Each Topic

• Panel type — IPS vs VA vs TN, and what each is actually good at
• Refresh rate — 60Hz vs 100Hz vs 144/165Hz explained
• Resolution — 1080p vs 1440p vs 4K, and when each is worth it
• Screen size — 24″ vs 27″ vs 32″ vs 34″, matched to desk space and use case
• Gaming vs office monitors — what actually differs beyond marketing
• Curved vs flat — when curvature genuinely helps
• Monitor arms and VESA — ergonomics and mounting explained

Refresh Rate: A Quick Primer

Refresh rate measures how many times per second your screen updates the image, measured in Hz. The MSI PRO MP252L and MP272L run at 100Hz with 1ms MPRT response — verified against MSI’s official specifications — while the Samsung C34G55TWWM reaches 165Hz with FreeSync Premium, verified against Samsung’s own spec sheet. Higher refresh rates matter most for gaming and fast-moving video; for general office work, the jump from 60Hz to 100Hz is noticeable but not essential.

Panel Type: IPS vs VA

The MSI models use IPS panels, prioritizing color accuracy and wide viewing angles — a good fit for photo editing or shared viewing. The Samsung models use VA panels, which typically offer deeper contrast and blacks, often preferred for gaming and movies. Neither is universally “better” — it depends on whether color accuracy or contrast matters more for your use.

Curved Monitors: When It Actually Helps

The Samsung S32D392GAM uses a 1500R curve; the C34G55TWWM uses a tighter 1000R curve — the lower the number, the more pronounced the curve. Curvature genuinely helps on larger and ultrawide screens by keeping the edges within your natural field of view, reducing the need to turn your head. On smaller screens (24″–27″), the benefit is much less noticeable.

Eye Comfort Features

MSI’s EyesErgo technology — TÜV-certified for anti-flicker performance — combines flicker-free backlighting and blue light reduction. Samsung’s equivalent Eye Saver Mode does the same job on their models. Both genuinely reduce eye fatigue during long sessions.

Touch Screen Monitors: A Different Use Case

If you’re setting up a retail counter or POS station rather than a standard desk, the PANDA C1701HT Touch Screen Monitor is built specifically for that workflow, letting staff interact directly with the screen instead of a mouse and keyboard.

Which Monitor Fits Your Situation?

• Standard office work, compact desk: MSI MP252L 24.5″.
• Multitasking or media with more space: MSI MP272L 27″.
• Immersive everyday use, larger desk: Samsung S32D392GAM 32″ curved.
• Serious gaming or creative work: Samsung C34G55TWWM 34″ ultrawide.
• Budget-conscious general use: DAHUA 24″ LED monitor.
• Retail counter or POS setup: PANDA touch screen monitor.

Frequently Asked Questions

Is a 100Hz monitor good enough for gaming, or do I need 144Hz+?
100Hz is a solid step up from standard 60Hz and works well for most games. Competitive players chasing the smallest edge sometimes prefer 144Hz+ — the Samsung C34G55TWWM’s 165Hz covers that tier if needed.

IPS or VA — which should I choose?
IPS for color-accurate work and wide-angle viewing; VA for deeper contrast, often preferred for gaming and dark scenes. Neither is wrong for general use.

Can I mount these monitors on a wall or monitor arm?
Monitors with standard VESA mounting support can be paired with a wall mount or monitor arm — confirm VESA compatibility for your specific model before buying a mount.

Buying Support Through CompuOne

If you’re not sure which panel type, refresh rate, or size actually matters for what you do day to day, CompuOne’s team can walk you through the tradeoffs rather than upselling specs you won’t use. Browse the full monitor Lebanon range to see current stock.