Serial Interface PCB for the Apple-1 | Gold Plated
Load data and software into your Apple-1 with this Serial Interface PCB. The PCB comes unpopulated but, once populated, can simply be inserted into an Apple-1 expansion port and be used as data input and output for the computer via a DB9 interface.
The bill of materials (and other information) can be found at https://github.com/flowenol/apple1serial