Specification: Item size: 9.2 * 3 * 0.4cm / 3.62 * 1.18 * 0.16in(L * W * H) Item weight: Approx.11g / 0.39oz Package size: 10.8 * 6.8 * 2cm / 4.25 * 2.68 * 0.79in(L * W * H) Package weight: 11g / 0.39oz Features: It is compatible with PCI Express M.2 specification 1.0. 3 screw holes 2242/2260/2280 available to fix PCB board. It ONLY support B+M key M.2 SATA SSD. It supports boot function. Note: Please be sure it is suitable for your slot before breaking it off.