> I've inherited a new Seagate 5 GB drive which I think is
> an ST15230WC -- it has an 80-pin single connector.

It is a SCA  usually used in raid boxes.

You need an adapter, cost about $40 from www.corpsys.com

SCA Adapter P/N SCA2SCSI   

408  743-8760  

I bought a few drives and a tape drive from them. They have a bunch
of adapters and cables to hook almost everything up.

Jeff Northon