Surf Squirrel waht can i do with it?

[AAACHIPSET]

I've just bought a Surf Squirrel from eBay (link to auction below) and I know I can add SCSI drives to it but what can I connect to the 9 pin serial?

http://www.ebay.co.uk/itm/251289525295?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

what a great deal  wow..wouldve gone for  100.00  in ebay aust  for sure ..
maybe theres still hope for a mpeg  squirel.