Yes, one could manually map all the connections yourself to a Pi, but this board is actually quite a nice complete kit with everything needed. It’s interesting that the PCIe slot is really only used for mounting, so no connectivity or power runs through it.
The device allows you to remotely operate the keyboard and mouse, and “see” the screen, of a computer without any physical presence requited. This is really only useful though if you need to remotely turn a computer on and off, or access its BIOS.
See https://hackaday.com/2022/09/20/raspberry-pi-grants-remote-access-via-pcie-sort-of/
#technology #raspberrypi #KVM #remoteaccess #PiKVM