the 4×1 matrix inputs are connected to BNC connectors located on the back of the card
inputs to the 8×1 matrix originate from the card edge (ISA) connector, so this switching matrix is unused in Amiga systems (it is limited to use with the DPS ES-2000 rackmount expansion system)
the outputs of either matrix can be routed to a BNC connector or to the card edge connector
can be controlled via the serial port with the control software of the Personal TBC or MicroSync cards