Apple II SCSI Card Questions

Hello all, I just today received an Apple II SCSI card (NO docs), and I have some questions... First, a description of the card: Typical sized Apple II card, has a ribbon cable with one connector soldered to the card, and the other terminating in a female 25-pin "D" shape connector. There is a 40-pin chip labeled "NCR/5380" on one line, followed by "C476217", "6-1082073", and "8810S" on separate lines. There is also a 27128 EPROM, labeled "341-0437-A, (c) Apple '87". Aside from some glue logic, there are also two PALs, an 8-position jumper block, and a 6264 SRAM chip. The card is silk-screened "607-0291-B (c) 1986 Apple II SCSI Card", and carries the FCC ID "BC66DSA2B2087". Questions: 1) Is this the High-Speed SCSI card I hear about every so often? 2) Will this card work in a IIgs? 3) Are there any limitations to what SCSI devices I can attach? Ideally, I'd like to add an external hard drive and CD-ROM (Or maybe a Zip drive). Could I do this from this card? 4) Does anyone have docs they could copy and send to me? I'd gladly pay postage. 5) Are there updates to the EPROMs available somewhere? Not that I suspect problems, but if Apple released updates, I'd like to make sure I have the latest code... 6) Does anyone have drivers (if needed) that they could copy and send to me? Again, I'll pay postage. Thanks! Rich B. P.S. I get the digest, so if you could CC: me privately in your replies, I'd appreciate it. I'm a bit anxious to know what I've got here... "They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." -- Ben Franklin