To mount an M.2 M or B+M Key PCIe SSD card instead of the SSD on the A1708 MacBook Pro | Compatible only with MacBook Pro A1708 MacBookPro 13.1 (Late 2016) and MacBookPro 14.1 (2017) in "Non-Touch Bar" version | Must be used with M2 NVMe SSD in M or B+M format 2230 or 2242 only. Specific Mac connector in 22+34 points | Not suitable for M.2 SSD type SATA, not suitable for other Mac | Please remove the power pin from the motherboard before you update the hard disk