Velleman Interface Motherboard

The Velleman Interface Motherboard for the Commodore 64 (K2628) had the following features:

– Plugged directly onto the expansion connector
– Had an identical connector a the rear side for another motherboard, a ROM-cartridge or another peripheral
– Room for 4 interface cards
– Buffered all the signals used by the system
– On-board rectifier and 5V regulators