The compact size makes this adapter card portable, and it is plug and play, no need for external power supply.This SSD adapter card features 12+16 pins, which has high performance and high transfer speed.Made of premium PCB material, it is durable to use.It is 2.7cm long, 11cm wide and 1cm high.It is mainly applicable for MacBook 2013/2014/2015, and it is also compatible for Win98/SE/2000/XP/Vista/7/8, for Linux.Item Name: SSD AdapterMaterial:PCBSupport Operating System: for Win98/SE/2000/XP/Vista/7/8, for Mac OS, for LinuxSize Details:Size: 2.7cm x 11cm x 1cm/1.06" x 4.33" x 0.39" (Approx.)Notes: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.Please make sure the size of the adapter card of the computer. Due to the adapter card plus SSD, its size is larger than the standard M.2 NGFF solid state drive.Before using the adapter card, please cancel all the passwords of the SSD, otherwise the hard disk will not be recognized.The contacts of the adapter card and the SSD and PCIe slots should be clean to avoid poor contact.This adapter card only supports for MAC OS SSDs of version 2013 or later. Please pay attention to whether your motherboard has enough space. Please pay attention to whether your computer motherboard supports M.2 PCIE X2 or M.2 PCIE X4.If your hard disk is encrypted, this adapter card does not support it.If there is not enough space around the M.2 NGFF slot of your computer, this adapter card cannot be installed.If your computer's M.2 slot does not support M.2 PCIE X2 or M.2 PCIE X4, your hard disk cannot be recognized by this adapter card.If your hard disk was originally an for Mac system, the for Microsoft system cannot recognize the disk format of your hard disk when installed in the computer, and cannot read the data inside. You can only enter the disk manager to reformat the hard disk.Compatibility With:for Macbook Pro 2013 A1493 A1502 ( MD864 MD865 MD293 Md294) SSDfor MacBook Pro 2013 retina A1398 A1502 (ME864 ME865 ME866 ME293 ME294) SSDfor Macbook Air 2013 A1465 A1466 ( MD711 MD712 MD760 MD761) SSDfor Macbook Air 2014 A1465 A1466 ( MD711 MD712 MD760 MD761) SSDfor MacBook Pro 2014 retina A1502 A1398 (MGX72 MGX82 MGX92 MGXA2 MGXC2) SSDfor MacBook Pro 2015 retina A1502 A1398(MF839 MF840 MF841 MGXA2 MGXC2) SSDfor MacBook Air 2015 A1465 A1466 (MJVM2 MJVP2 MJVE2 MJVG2) and for Mac ME253 MD878 SSDPackage Includes:1 X SSD Adapter