Despite what it looks like, this isn't a hot-rod Apple Watch. This is an IP KVM. What does that mean? It's basically a remote control rocket pack for any computer, from a giant tower PC, to a little mini PC you might run in your homelab.
BIG SCARY DISCLAIMER: The JetKVM is currently on Kickstarter. If you decide to back it, and they don't deliver, that's... actually pretty common. I did back their Kickstarter, and I think they'll deliver, but there are no guarantees.
BuildJet did not pay for this post, and I am not sharing in any profit, or even using an affiliate link. I just saw this tiny KVM come across my feed, thought it looked amazing, and asked if I could test it out.
First, you plug in your computer's HDMI to the mini HDMI input, and they include a thin adapter cable since most people don't have mini HDMI. Then you plug in USB to one of your computer's USB-A ports (using the supplied USB-C to USB-A cable).
This should power it up, at least if your computer always provides power to USB—some computers don't, and I'll talk about that scenario later. But the last step is to plug the Ethernet port into your network.