Before You Buy a Desktop: Connections & Setup Checklist

Before buying a desktop, check how it will connect to your monitor, internet and accessories, and confirm exactly what is included. The right processor and RAM matter, but so does being able to plug everything in when the computer arrives.

A few simple checks can help you avoid ordering the wrong cable, discovering you need a Wi-Fi adapter or assuming a monitor comes with the computer.

Use this desktop buying checklist whether you are replacing an existing machine or building a complete setup from scratch.

The Quick Desktop Buying Checklist

• Does the computer suit your applications and workload?
• Will its video outputs connect to your monitor?
• Do you have the correct display cables or adapters?
• Does it support the number of screens you want to use?
• Will you use Ethernet or need Wi-Fi?
• Do you need Bluetooth?
• Are there enough suitable USB ports?
• Are the required power cable or adapter included?
• Do you need a keyboard, mouse, webcam or speakers?
• Is the operating system suitable, and what software is included?
• Will the computer fit your workspace with room for ventilation?
• Have you planned how to transfer your files?

1. Check Your Monitor Connections

Start with the video outputs on the computer and the inputs on your monitor. They need to match directly or work through a suitable cable or adapter.

Do not assume your existing cable will fit the replacement computer. Business desktops commonly have DisplayPort, while other models may include HDMI, VGA or a different combination.

DisplayPort

DisplayPort is a common connection on business desktops and office monitors. If both devices have a suitable DisplayPort connection, a DisplayPort cable is usually the straightforward choice.

HDMI

HDMI is common on monitors, televisions and many computers, but it is not fitted to every business desktop. Check the actual ports rather than assuming it will be available.

DVI and VGA

Older monitors may have DVI, VGA or both. These can still be usable with a suitable computer connection or adapter, but check compatibility and the resolution you want to run.

USB-C

A USB-C socket does not automatically provide video output. The computer’s port must support the required display capability, and the cable must also be suitable.

If you want to connect a USB-C monitor, confirm that the exact desktop supports that connection.

For more detail, read our Monitor Connections Explained guide.

2. Check the Direction of Any Adapter

A cable or adapter is not necessarily reversible just because the plugs fit.

For example, an adapter designed to connect a DisplayPort computer to an HDMI monitor may not work when connecting an HDMI computer to a DisplayPort monitor.

Some combinations require an active converter, which may also need USB power. Compatibility can depend on the resolution, refresh rate and capabilities of the connected devices.

Before buying an adapter, identify:

• The source: The computer and its video output.
• The destination: The monitor and its video input.
• The display requirements: The resolution and refresh rate you want to use.

If you are unsure, send us the monitor model and clear photos of the connections on both devices.

3. Confirm Support for Multiple Monitors

Many business desktops can run two monitors, but support varies by model and configuration.

Check the number of supported displays, the available outputs and the resolution and refresh rate supported on each connection.

Having several physical video sockets does not always mean every socket can be used simultaneously. If a dedicated graphics card is fitted, the connections you should use may also differ.

An ordinary splitter generally duplicates one picture onto two screens. It does not usually create two independent workspaces.

For a dual-monitor setup, tell us the exact computer and monitor models so we can help check the arrangement.

Explore our Monitor Buying Guides & Advice for help choosing suitable screens.

4. Decide How You Will Connect to the Internet

Ethernet: A Wired Network Connection

If you have a network cable available at your desk, a wired Ethernet connection can be a straightforward option.

Check that the computer has the required network connection and that you have a cable long enough to reach your router, switch or network wall socket.

Wi-Fi: Check That It Is Included

Do not assume a desktop has Wi-Fi. Many business computers were originally used on wired office networks.

If the computer will be used away from a network cable, confirm that Wi-Fi is fitted or ask about a suitable adapter.

Some wireless configurations require external antennas. Where applicable, check that these are included and attached during setup.

Your internet experience also depends on the wireless signal where you place the computer. A desktop tucked beneath a desk or inside furniture may have a less favourable signal than a device positioned in the open.

5. Check Bluetooth Separately

Wi-Fi and Bluetooth are different features. Having one does not guarantee the other is available.

If you want to use Bluetooth headphones, a Bluetooth keyboard, a mouse or another compatible accessory, confirm that the computer supports it.

Some wireless keyboards and mice use their own USB receiver instead of Bluetooth. Those devices need the correct receiver and an available USB port.

6. Count Your USB Devices

Think about everything you will plug into the computer, including devices you only use occasionally.

• Keyboard and mouse.
• Printer or scanner.
• Webcam.
• USB headset or microphone.
• External backup drive.
• Wi-Fi or Bluetooth adapter.
• USB memory sticks and other accessories.

Check both the number and type of ports. Traditional USB-A and smaller USB-C plugs are different shapes, and individual ports can have different capabilities.

For external storage, transfer speed may matter. For a keyboard and mouse, having convenient, compatible connections is usually the main concern.

A suitable USB hub can add connections, but devices with higher power requirements may need a powered hub or their own power supply.

7. Confirm What Comes with the Computer

Read the listing carefully. A standalone desktop price may cover the computer and its stated accessories, rather than a complete workstation.

Check whether the purchase includes:

• The computer’s mains power cable or correct external power adapter.
• A monitor and its power cable or adapter.
• A suitable display cable.
• A keyboard and mouse.
• Any required wireless antennas.
• Any mounting bracket or stand shown or mentioned.

An all-in-one includes its built-in screen, but a keyboard and mouse may still be optional extras.

Product photographs can show a setup or configuration for illustration. Use the listing’s included-items information, and ask if anything is unclear.

8. Plan for Video Calls and Audio

A separate desktop and monitor do not automatically include a webcam, microphone or speakers.

Some all-in-ones and monitors have these features built in, but others do not. Check the exact equipment.

For Video Calls

You need a suitable camera, microphone and a way to hear the other participants. A USB webcam and headset can be a practical arrangement.

For Sound

Do not assume an internal desktop speaker will provide the listening experience you want. External speakers, headphones or a headset may be more suitable.

If you plan to use speakers built into a monitor, confirm that the monitor has them and that your chosen connection carries audio.

9. Check Windows and Your Applications

Confirm which operating system is included and that the computer officially supports the version you intend to use.

Also check your important applications and any older peripherals. An existing printer or specialist program may need compatible drivers, an updated version or a different licence.

Windows being included does not mean Microsoft Office or other paid applications are included.

If you already own software, check whether its licence can be transferred and how to reinstall or activate it on the replacement computer.

For help choosing performance specifications, read our desktop specifications guide.

10. Measure Your Workspace

Check the computer’s dimensions and allow additional space for cables and ventilation.

A mini PC may fit comfortably on the desk, while a small form factor computer or tower may need a different position. Models using an external power adapter also need somewhere suitable for that adapter.

Keep ventilation openings clear and avoid tightly enclosing the computer in furniture.

Think about comfort too. Your screen should sit where you can view it comfortably, with the keyboard, mouse and frequently used ports within easy reach.

Read our desktop size comparison if you are deciding which format will fit.

11. Plan Your File Transfer

Replacing a computer also means moving your working files and setting up your applications.

Before retiring the old computer, identify what you need to keep:

• Documents, photos and locally stored work files.
• Downloads and files saved on the desktop.
• Locally stored email archives.
• Browser bookmarks and any required browser profile information.
• Application installers, licence details and account information.
• Data stored outside your usual document folders.

Make a backup before transferring files. If you use cloud storage, confirm that the files have finished syncing and can be accessed on the new computer.

Applications generally need to be reinstalled; copying their desktop shortcuts will not transfer the programs.

Keep the old computer and your backup available until you have checked that everything important works on the replacement.

Frequently Asked Questions

Can I use my existing monitor with a new desktop?

Usually, provided there is a compatible connection or suitable adapter. Check the monitor inputs and computer outputs before ordering.

Do all desktops have Wi-Fi?

No. Wi-Fi is optional on many business desktops. Confirm it is included if you need wireless internet.

Will my wireless keyboard and mouse work?

Check whether they use Bluetooth or a dedicated USB receiver. You will need the appropriate computer support or the correct receiver.

Does a USB-C port mean I can connect a monitor?

No. The port must support video output, and the cable and monitor must be compatible with that capability.

Can I use my television as a screen?

Often, provided the computer and television have compatible connections and display support. Consider text clarity, viewing distance and comfort if you will use it for regular desk work.

A Quick Check Now Can Make Setup Easier

You do not need to know every connection by sight. Knowing what equipment you have and what you want to connect is a useful starting point.

At NZ Laptop Wholesale, we can help check a proposed desktop setup before you order. Send us the computer you are considering, your monitor model and any particular accessories or applications you need to use.

Our professionally refurbished computers are tested, cleaned and backed by our warranty, with local support and NZ-wide courier delivery.

Browse Refurbished Desktops

Still choosing your computer? Explore our Desktop Buying Guides & Advice for practical help with refurbished desktops, case sizes, all-in-ones and specifications.