Features: and This riser card supports the 2280 PCIE x4 and PCIE x2 protocol for M.2 NGFF SSD converted to the 2013 2014 2015 version of the for Apple for MacBook AIR and PRO A1465 A1466 A1502 A1398 hard drive. PCIE x4 and x2 for M.2 NGFF SSD are divided into AHCI protocol and NVMe protocol. For Novice user, please use PCIe x2 or x4 AHCI hard disk. Experienced and capable user can use NVME protocol PCIe x4 for M. 2 NGFF SSD installation. About using AHCI protocol hard disk or NVME protocol hard disk, this is your own technical problem, has nothing to do with the adapter card! Novice buyers are advised to purchase PCIe x4 or PCIe x2 for M.2 NGFF AHCI SSD with this adapter card! Because the disk installation system of the AHCI protocol is relatively less restrictive, note that the AHCI data transfer protocol is not a Sata data transfer protocol. In particular, not all NVMe for M.2 NGFF SSD for Apple computers are compatible! To buy a matching hard drive can refer to the buyer evaluation and consulting customer service! If the hard disk is not compatible, it will be restarted repeatedly, but it will not be recognized! Specifications: Material: PlasticandMetal Size: approx. 24x13mm/0.94x0.51in Color: Black Quantity: 1PC Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-3mm measuring deviation due to manual measurement. Package includes: 1 x NVMe PCIe for M.2 NGFF to SSD Adapter Card for Macbook Air Pro 2013 2014 2015 Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.