Five stars but uses "insulating pads" rather than trays on spinning disks
Love it. You get to reuse two old 2.5" laptop drives by mounting this in one 3.5" bay of a desktop case."no inner tray required" is only technically true--drives with exposed circuit boards need to be protected by one of the two included slippery, electrically-insulating 3m adhesive mylar stickers. I couldn't find a part number to buy more of these "insulating pads" or "hdd protective film" stickers on kingwin's site. (i bought a second dual-bay unit just for the stickers.) note that fully-encased ssd drives like the intel 520 (120 gb) don't need a sticker.The mechanism is fantastic. With the lightest touch, the plastic, lightly-sprung silver-colored door latch unleashes a much stronger internal eject spring. The front door flings open faster than you can move your hand and a plastic lever in the back shoves the drive out about 5/8". When you insert a drive, you have to really push the door closed, but a bit of sheet metal on the inside of the drive door reduces friction so everything works nicely.With two drives inserted, one wd scorpio black running continuous drive diagnostics for over an hour felt hot to the touch, so i decided to place a 120 mm fan to cool it.You must connect the special jumper cables if you want the blue power light to blink purple (+red) when the drive is accessed. Leave the cable off for no-blink htpcs.