there’s another product like that made by VANTEC, which mounts and is powered by a PCI slot.
http://www.coolpc.com.au/catalog/product_info.php?products_id=621
my own favourite accessory would be a belkin nostromo N52 gaming pad
http://catalog.belkin.com/IWCatProductPage.process?Merchant_Id=&Section_Id=200345&pcount=&Product_Id=162783&Section.Section_Path=%2F%2FRoot%2FNostromo%2E%2E%2EingTools%2F
a similar product to that is the “wolf claw pad”
which also combines an attached keyboard, for those neccesary “no0b” spam typing bursts during a game of counterstrike on a kiddy’s rats server…
http://www.wolfclaw.com.sg/product.php#
