Gigabyte M27Q P (Question about USB-C power delivery function)

Duvan · 13 Dec 2022 at 09:55

I'm trying to figure out whether the Gigabyte M27Q P is worth it over the cheaper Acer Nitro XV272U, for the USB-C port (and KVM function).

In particular I wonder about the USB-C slot, which has DP Alt mode and 18 W Power Delivery.
Are all computers (laptops) able to use the PD 18 watt? Regardless if they are able to do Alt Mode? Or does PD work mostly for charging phones?

Also, is 18 watt enough for keeping the power of a normal HP elitebook PC running in office work (Microsoft Office (mainly Word), internet browsing and Teams meetings). I guess Teams is what demands the most CPU/GPU load of those.
I read in a review that my HP EliteBook Folio 1040 G3laptop has an average load of 33 watt and an average idle of 9,4 watt. Is that about normal also for newer Elitebook laptops?

Rroff · 13 Dec 2022 at 09:59

From what I recall the M27Q isn't designed for charging laptops and similar devices (especially won't power them while on). The KVM can be quite useful though - been thinking about getting one myself.

Duvan · 13 Dec 2022 at 10:30

Is the USB-C on the M27Q-P different from the ones on other monitors?
This review says: "It only puts out up to 18 watts of power so you can’t expect your USB-C laptop to charge while it’s docked to the monitor. "

Gigabyte M27Q P Review – 1440p 144Hz Gaming Monitor with LG IPS Panel – Highly Recommended

monitornerds.com

But I got curious, as to whether the USB-C will even be able to deliver that 18 watt to all laptops, or if the laptop needs to be compatible with ehh Power Delivery or something?

Duvan · 17 Dec 2022 at 12:33

About the KVM switch: would it work for also other USB devices than mouse and keyboard, such as using the same web cam on two computers? Any guesses?

LuckyBenski · 20 Dec 2022 at 13:22

Duvan said:
But I got curious, as to whether the USB-C will even be able to deliver that 18 watt to all laptops, or if the laptop needs to be compatible with ehh Power Delivery or something?

PD is a charging protocol/standard. The supply and downstream device need to be compatible with PD, yes. If your laptop normally charges via that USB-C port then it's going to have some form of PD compatibility.

The charger and the device will negotiate PD standards and use the best one they can both do. If the monitor is limited to 18W your device might charge but it might also refuse to charge and merely stay powered, for instance.