Got access to an SE or SE/30 hard drive sled? Works perfectly on the floppy drive and hard drive shelf in the Mac II, IIx, and IIfx machines. Later 3.5" Quantum drives have different side hole spacing, so you'll need to notch the holes in the sled to get things bolted up. Currently using a 230MB LPS240S in my IIfx.
-J
-J