In the box ASR10 SCSI and DI board is on Ebay check them out.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2504488102&ssPageName=ADME:B:LC:US:1
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2504496497&ssPageName=ADME:B:LC:US:1