Problem with scsi card

I have installed a DC-315U PCI SCSI card into a PC running Windows 2000 and it appears in the devices list correctly, but I can not get the system to detect the external SCSI devices attached to the card correctly.

I have a Ricoh CDRW (MP6200s) attached as the first device setting id 1). and this works correctly, when terminated.

But when I add my Umax astra scanner (1220s) as the 2nd device (setting id 5). Neither the scanner nor the cdrw show. even though the scanner is terminated correctly.

Any ideas what I could try?