Olivetti Prodest PC1 PS2 mouse adapter
Use this PCB to connect a PS2 mouse or USB mouse that supports the PS2 protocol to an old Olivetti Prodest PC1 computer.
This PCB allows a USB type A socket or PS2 female socket to be soldered on the right side. Choose the one that you prefer.
Firmware for the PIC can be found on here and does not require any modification. More details can be found at www.enide.net