This is a heatsink for M.2 drive. The device is 2 inches high, 3 inches long and 7/8 inches wide. The power cord is 17 inches long. It comes with 2 thermal silicone strips, mounting screws, a small screwdriver, Velcro cable manager and paper instructions. To mount the device, remove the base, apply thermal silicone to the top and bottom of the M.2 drive, and screw the base back into place. Then insert the card into position on the motherboard and screw it in place. Finally, connect the powerโฆ