SCSI host adapter
There are 2 jumper settings and 1 connector for LED
JP1: Autoboot ON/OFF, ON = Left (Default)
JP2: Enable RAM Extension ON/OFF, Off = Right (Default)
JP5: HDD LED
JP3: 50Pin SCSI-2 port
P2: 25Pin DSub Female for external periphirals
P3: For connecting the external RAM board.
It has space for a harddrive, but "external" power is required