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. |
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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.