“A very simple and fully functional Raspberry Pi-based KVM over IP that you can make with your own hands without any soldering!
This device helps to manage servers or workstations remotely, regardless of the health of the operating system or whether one is installed. You can fix any problem, configure the BIOS, and even reinstall the OS using the virtual CD-ROM or Flash Drive.
It only costs between $30 and $100 for DIY depending on the features desired. Even the most expensive configuration will be cheaper than a $500 commercial IP-KVM. “