This is a 100 megabyte removable disk drive with apple II high speed SCSI card. It includes 1 disk, with GS system 6, Prodos 8 v2.0.1, tons of other stuff. I will accept the best trade, or the best cash offer. I was thinking of cash in the neighborhood of $200. The Zip Drive cost me $199 brand new, and the SCSI card cost me about $50. Email offers to quantum@telis.org.