The SCSI cards have a 25-pin SCSI connector; the printer port and serial port are also 25-pin connections. NONE of these are interchangeable!
The video and floppy drive ports are 23-pin connectors. On the Amiga A2000 itself the similar pin number ports are male vs female; the SCSI 25-pin port is female.
Unless my A2630 CPU card is wrong, it has no connector on the back
