Start with the connection your laptop can actually use: an HDMI or DisplayPort connection suits a straightforward second screen, while a USB-C docking monitor makes sense if the laptop supports video over USB-C and the monitor can meet its charging needs. Then choose a screen size and stand or mount that fit the desk, rather than judging the display by its diagonal measurement alone.
A second monitor is a separate purchase decision from replacing a laptop: its usefulness depends on the existing computer, the work done at the desk and the space available.
If documents, spreadsheets and other applications need more visible space, check the laptop’s external-display output before choosing the monitor’s size and position. Which? distinguishes monitors for limited spaces from larger screens suited to home offices.
A docking monitor may connect the display and desk peripherals while charging a compatible laptop. Check video support on the laptop’s USB-C or USB4 port and compare the monitor’s stated power delivery with the laptop’s charging requirement.
Stand depth and adjustment matter when a second screen has to share a shallow desk with a laptop. The Health and Safety Executive advises placing a screen directly ahead, with its top around eye level and the display about an arm’s length away.
Choose a connection route first, then compare the usable workspace and physical fit. A USB-C connector alone does not establish video support or sufficient laptop charging power.
Choose it when: The laptop has a confirmed compatible video output and you want an added display without using the monitor as a dock.
Trade-off: Keep a separate arrangement for laptop charging and any peripherals that need their own connections.
Choose it when: The laptop supports display output through that port and you want to connect the screen, and potentially charging and peripherals, through one cable.
Trade-off: Video capability and power delivery must match the laptop; having a USB-C socket on each device is not enough.
| Priority | What to check | Your needs |
|---|---|---|
| Video connection | Confirm the exact laptop’s display output, the monitor’s matching input and the cable needed for the intended resolution and refresh rate. Microsoft Support lists HDMI and DisplayPort among external-monitor connection types; HDMI Licensing Administrator notes that cable choice matters for some display modes. | I want the second screen to work with the laptop I already own, without relying on the shape of a socket as proof of compatibility. |
| Charging and docking | For a one-cable setup, confirm laptop video-over-USB-C, USB4 or Thunderbolt capability. Compare the monitor’s stated power delivery in watts with the laptop’s charging requirement, and check any USB or Ethernet ports you intend to use. | Keeping charging and desk accessories on one connection matters to me; otherwise, separate cables are workable. LG lists 15W for its 27U631A-B, while Lenovo lists up to 140W for its different P27pz-30 model, illustrating why the exact model matters. |
| Screen and desk fit | Consider screen size alongside resolution, desk width and viewing distance. Check the stand’s footprint and height adjustment; for an arm, confirm the monitor’s VESA pattern and weight against the arm and desk mount. | I need room for documents and applications, but the display also has to fit where I work. The Health and Safety Executive advises a screen directly ahead at about arm’s length, with its top around eye level. |
| Work-focused features | Check the connections and positioning features needed for daily office use before giving weight to a high refresh-rate specification. Compare resolution against the kinds of documents or images you work with. | My main use is a fixed laptop workspace, so usable screen space and a practical layout matter more to this decision than gaming-oriented features. |
USB-C identifies a connector, not a uniform set of functions. The laptop and monitor need a compatible display mode, and the monitor’s power-delivery limit may not meet the laptop’s charging requirement.
Check the exact laptop model’s external-display and charging specifications, the monitor’s upstream-port details and the cable required for the connection.
If either function does not match, the desk setup may still need a separate charger, adapter or dock.
A larger display takes up more physical space, while an unsuitable stand can make it difficult to place the screen at the height and distance advised by the Health and Safety Executive.
Measure usable desk width and depth, then check the stand footprint and adjustment range. For an arm, confirm the VESA pattern, monitor weight, arm limits and desk-mount fit.
A high refresh rate does not tell you whether the monitor has the inputs, charging capability or positioning adjustments needed for a laptop desk.
Filter by the laptop connection and workstation layout first. Give higher refresh rates priority if another intended use calls for them.
The Health and Safety Executive’s display-screen guidance considers screen placement alongside the wider desk setup; it also identifies fatigue and physical discomfort as possible problems associated with unsuitable display-screen work.
Position the external screen with the keyboard, mouse, chair and lighting in mind, rather than fitting those around the monitor afterwards.
These manufacturer examples show why connections, charging and adjustments need checking on the exact model rather than assumed from a brand name.
Dell UK lists office-oriented USB-C hub monitors with differing connections and charging specifications.
Lenovo UK lists docking monitors with different display resolutions, ports and charging capacities.
LG UK’s QHD USB-C examples show that the connector does not indicate a particular charging capacity or stand design.
HP’s UK product information includes QHD USB-C monitors, but the documented features belong to specific models.
These monitors are options for adding a screen to an existing laptop desk. Compare their stated display characteristics with your available space, and confirm the connection and any charging requirements for your exact laptop.
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Consider this WUXGA display for a fixed laptop workspace where screen positioning matters. Check your laptop’s video-output support and charging requirement against the exact monitor connection you intend to use.
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This USB-C model is worth considering if you need to reposition a second screen within a changing desk setup. Confirm the supplied mounting arrangement, your laptop’s video compatibility and whether the stated charging capability meets its needs; check the delivered variant’s weight if you expect to move it often.
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A WQHD screen is an option to assess for a fixed workspace with room for another display. Check the intended video input against your laptop; if you want USB-C charging as well, confirm the monitor’s power delivery against the laptop’s requirement.
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The 31.5-inch display calls for a careful check of desk space and viewing distance. Before choosing a USB-C connection, confirm that the laptop supports video through its port and that the monitor’s charging specification meets the laptop’s needs.
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This 24-inch Full HD model is an option to measure against a fixed desk’s available space. Its product name lists HDMI and DisplayPort alongside USB-C; confirm laptop compatibility through the connection you choose, and check USB-C video and charging functions separately before relying on them.
No. USB-C describes the connector, not guaranteed video output. Check the exact laptop’s documentation for an applicable display capability, such as DisplayPort Alt Mode, USB4 or Thunderbolt, then check the monitor’s upstream port and the cable it requires.
Compare the monitor’s stated USB-C power-delivery maximum with your laptop maker’s charging requirement; there is no single wattage for every laptop. LG UK lists 15W for the 27U631A-B, HP UK states up to 100W for the 527pu, and Lenovo UK states up to 140W for the P27pz-30. Those figures belong to different models, so check the one you intend to use.
No. Confirm the monitor’s mounting-hole pattern and weight, then check the arm’s supported size and weight and whether its clamp or grommet suits the desk. VESA’s Flat Display Mounting Interface defines mounting interfaces, but an arm and monitor still need to match.
The Health and Safety Executive advises placing the screen directly in front of you, with its top level with your eyes and the display about an arm’s length away. Check that the stand or compatible arm can achieve that position within your desk space.