http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2062059488

This is the Voodoo Graphics SLI card but apparently this one comes with a daughter card that adds another chipset.  Therefore I think this is a three way Voodoo 1 SLI set up despite that fact the seller claims that it's five way.

Looking carefully at those pictures it looks as if there's a mounting for a second daughter card which would make it a four way SLI rig.

Searching on Google has turned up nothing about this "Shade" add-on card.  The 100SB remains something of a mystery really.  It was around too early to be properly covered by reviews and such on the web, I suppose!