Is this monitor good for both work and gaming?

Yes. The QHD IPS panel is sharp for documents and spreadsheets, and 144Hz with Adaptive Sync makes games and scrolling noticeably smoother than a 60Hz office screen. It is not a competitive esports panel, but it covers both uses well.

Can one USB-C cable really charge my laptop and run the display?

Yes. USB-C carries the video signal and delivers up to 65W of power, so a compatible laptop needs only that cable for display and charging. The built-in KVM then lets one keyboard and mouse control the laptop and a second PC.

Does it have built-in speakers?

No. There are no integrated speakers, so you need external speakers or headphones. Audio can pass through the monitor's connections if your source supports it.

Is the HDR worth using?

It is HDR Ready rather than a true HDR display, with no local dimming and modest peak brightness. HDR content will look slightly better than SDR, but do not expect the contrast of a premium HDR monitor.

What cables are included in the box?

The box includes a power cord, an HDMI cable, a USB Type-A to Type-B cable and a USB Type-C to Type-C cable. That covers a basic setup, including USB-C laptop docking.

How does it compare with a standard 60Hz QHD office monitor?

It costs more but adds 144Hz, Adaptive Sync, USB-C docking with 65W charging and a KVM switch. If you only do office work and never game, a plain 60Hz QHD panel covers the basics for less.