Who this setup suits

Writers with one spare socket

If you write applications, letters or coursework on a laptop, a compatible USB-C monitor can display your work and charge the laptop without its separate charger occupying another socket. BenQ UK advises checking that the laptop supports DisplayPort Alt Mode for video and USB-C charging input.

People working with several documents

If you move between a covering letter, job advert and notes, screen workspace and positioning matter alongside the socket count. BenQ UK specifies a 2560 × 1440 display and height, tilt, pivot and swivel adjustment for its 27-inch GW2790QT.

Laptop users needing more charging headroom

If your laptop needs more power than a 65 W monitor can supply, compare its charging requirement with higher-output models. LG UK specifies USB-C charging up to 90 W for the 27UP850K-W and 27BA850-B; the latter also has Ethernet and built-in call hardware.

What to check when choosing

Check the laptop’s USB-C video and charging capabilities before choosing a monitor’s Power Delivery output. Then decide how much screen workspace and desk connectivity you need.

Concern What to check Who this matters to
Socket and cable use Confirm DisplayPort Alt Mode and charging input on the laptop, then compare its charging requirement with the monitor’s USB-C Power Delivery output. I want a larger screen without giving my laptop charger another wall socket. Around 50% of consumers put this one-cable need first.
Writing workspace Compare Full HD, QHD and 4K at the screen size you want; check height and tilt adjustment, and pivot if you use portrait orientation. When I edit a letter alongside a job advert and notes, room to arrange the windows and position the screen matters most. This is the primary need for around 30% of consumers.
Desk connections Count the USB ports you need and check separately for Ethernet, a webcam, microphone and speakers. If my desk also handles peripherals or video interviews, I want those connections close at hand. Around 20% of consumers prioritise these extra desk functions.

Common buying mistakes

  • Assuming every USB-C laptop supports a one-cable setup

    A USB-C port may not provide monitor video output or accept charging. The connector’s shape alone does not establish what the port can do.

    As BenQ UK advises, check the laptop’s specification for DisplayPort Alt Mode and USB-C charging input. Also confirm that the cable supports the connection you intend to use.

  • Choosing 65 W without checking the laptop

    BenQ UK rates the GW2790QT at 65 W Power Delivery, while LG UK rates the 27UP850K-W and 27BA850-B at up to 90 W. Those figures do not establish which output meets your laptop’s needs.

    Compare the laptop manufacturer’s charging requirement with the monitor’s stated output before planning to leave the original charger unplugged.

  • Choosing call features when the desk is mainly for writing

    A webcam, microphone and Ethernet connection may be useful for interviews or remote work, but they do not replace the need to check laptop charging compatibility and screen positioning.

    List the calls and peripherals you expect to use, then choose a monitor with those connections rather than assuming every USB-C model has them.

Relevant brands to consider

BenQ

The GW2790QT is a writing-focused example for a laptop desk where USB-C charging, screen workspace and stand adjustment matter together.

  • BenQ UK specifies a 27-inch 2560 × 1440 display, 65 W USB-C Power Delivery, a USB hub and height, tilt, pivot and swivel adjustment for the GW2790QT.
  • Its 65 W output suits a charger-replacement setup only if the laptop accepts USB-C video and charging and its power requirement is within that output.

LG

Two LG models illustrate different reasons to choose charging up to 90 W: a 4K screen for detailed on-screen work or integrated connections for calls.

  • LG UK specifies 4K resolution for the 27UP850K-W and a webcam, microphone, speakers, Ethernet and four downstream USB ports for the 27BA850-B.
  • The 27BA850-B is Full HD at 27 inches, so its pixel workspace is lower than that of the 4K 27UP850K-W or a QHD alternative.

Dell

The S2725DC is a QHD USB-C option to consider when display adjustment is important for document work.

  • Dell UK specifies a 27-inch 2560 × 1440 display with height, pivot, swivel and tilt adjustment for the S2725DC.
  • Before relying on the S2725DC instead of a laptop charger, confirm its USB-C Power Delivery output in the detailed model specification and compare it with the laptop’s requirement.

Joybuy products

Related products coming soon.

Frequently asked questions

Can any USB-C laptop use one cable for video and charging?

No. The laptop must support video output through DisplayPort Alt Mode and accept charging through its USB-C port. BenQ UK advises checking the laptop manufacturer’s port specification rather than relying on the presence of a USB-C connector.

Will a USB-C monitor leave me needing only one wall socket?

It can leave the monitor as the only device using a wall socket at that desk, because a compatible monitor may charge the laptop through USB-C. The monitor itself still needs power, and this arrangement depends on the laptop’s video and charging support and the monitor’s Power Delivery output.

Is 65 W enough to charge my laptop from a monitor?

65 W is suitable only if it meets the laptop’s charging requirement for your intended use. BenQ UK specifies 65 W for the GW2790QT, while LG UK specifies up to 90 W for the 27UP850K-W and 27BA850-B; compare the relevant output with your laptop manufacturer’s guidance.

Does the USB-C cable matter?

Yes. Check the monitor instructions for the cable needed to carry the intended video, data and charging functions. LG UK states that its supplied USB-C cable is required for those stated functions on the 27UP850K-W.

What should I do with an old monitor when replacing it?

Check an appropriate electrical-equipment recycling route rather than treating an old monitor as ordinary household waste. GOV.UK describes the UK WEEE framework as supporting recovery, reuse and recycling; check the retailer’s take-back arrangements or your local authority’s options for the monitor.