Got this old IBM ISA prototyping board. It's basically a blank slate for building your own custom expansion cards for vintage PCs. It has the standard 8-bit or 16-bit ISA connector and a DB9 port already mounted on the bracket. Most of the board is just a grid for soldering your own chips and components. Perfect if you're into retro computing and want to tinker with some custom hardware projects. It's unpopulated so you'll need to know your way around a soldering iron to do anything with it.