I'm sure I saw one of these and now cannot find it. It basically allows a single slot expansion card (agp, PCI, pcie) to bolt into a 3.5" bay on your case. It is very useful with a ribbon cable, to a slot (pcie, PCI, agp, etc) hiding under a two slot video card (most video cards now days use two slots, sadly). It's also convenient to access multimedia cards from the front panel (sound cards, capture cards, etc).

Anyone know where to find these?

Help is greatly appreciated!

Keeping an eye on this one. I have seen the ribbon cable, that allows one to move their video card (saw a video where they transfered a CPU cooler to it), but not the mounting kit. I figured the card would have to be mounted in a larger case (atx style case with a smaller matx motherboard, for example).

It's pretty useful and I don't understand why these aren't common. Sometimes you can't use all your pcie slots available because of two slot cards, so it helps a lot if one can mount a card (say bluetooth card) in a 3.5" bay and use a ribbon cable extension. It's interesting some people mount CPU heatsinks to video cards; that would usually block neighboring slots and it's definitely handy to relocate a card to a 3.5" bay in this situation. Not only that, many ATX cases remain with unused or redundant drive bays, and a expansion card would run much cooler in a drive bay (what about a two slot GPU card in a 5.25" bay?). It's not like people never had PATA ribbon cables crawling around inside their computer case with those old IDE drives.