tomvos wrote: Another option to use a SD Card with a SCSI device may be this:
http://shop.codesrc.com
They are currently out of stock, but perhaps you're lucky and can find one of these on ebay. However, as you stated, they are not in the 20 $ range. But I doubt that you'll find any something2SCSI converter in the 20 $ range.
Hope it's ok to respond to an older topic, but I wanted to say I got one of those a few months ago and have been happy with it. It's not in an sgi, fwiw, but I'm not sure how much a difference that really makes