The riser card only supports solid-state hard drive specification length: 2230 and 2242 M.2 NVMe PICE SSD solid-state hard drives This adapter card only supports 2016 MacBook Pro A1708 and 2017 MacBook Pro A1708 laptops! No other computer models can be used!Due to compatibility issues with Apple computers, it is not guaranteed that all 2230 2242 M.2 NVMe PCIE SSDs can be used M.2 NVME PCIE solid-state drives with lengths of 2260 and 2280 cannot be fixed on this adapter card and are not supported.Does not support M.2 NGFF SATA SSDs. Note: Some solid-state drives have two spaces but the transmission protocol is SATA. This kind of SATA protocol cannot be used. Please be sure to consult the official customer service of your solid-state drive to understand the transmission protocol of the hard drive. If you buy the wrong one, you can't use it)! Note: Not all M.2 NVMe PCIE SSD solid-state drives for Apple computers are compatible! You can refer to the buyer's evaluation and consult customer service to purchase the supporting hard disk! If the hard disk is not compatible, it will restart repeatedly, and if it is serious, it will not recognize the disk! There are many pins definition of the solid -state drive of the M.2 NGFF interface, which can be divided into A.B.C according to the key bits ... until M Key; according to the size, it can be divided into 2230, 2242, 2260, 2280, 22110 specifications; PCIE X2 AHCI data transmission protocol, B+M Key PCIe X2 NVMe data transmission protocol, M Key PCIe X4 AHCI data transmission protocol, M Key PCIe X4 NVMe data transmission protocol; once again emphasizing that this product supports only 2230 2242 M.2 NGFF interface PCIE X4 AHCI or NVME transmission protocols (there is only one space) and 2230 2242 size PCIE X2 AHCI or NVME transmission protocol (this solid -state hard drive has two interfaces, butthe transmission protocol is NVME or AHCI. type: A Colour:black+yellow Material: PCB Size:about 6.4 x 3.1cm Package Contents: 1 x