USB3.2 standard transmission, Transfer to 20Gbps, Backward compatible with USB3.1, USB3.0 Compliant with PCI Express Base Specification Revision 3.1a AHCI 1.3.1 Compliant Support the use of AHCI protocol hard drives on the market Compliant with NVMExpress 1.4 Support the use of NVME protocol hard disks on the market Support the use of NVME protocol for hard drives in 2015 (The previous old hard drive enclosures not support nvme of hard drives) Supports PCIe 0 Gen 3x2, up to 16Gb/s Supports PCIe 1 Gen 3x2, up to 16Gb/s Support UASP and TRIM instructions to the read and write speed of SSD hard drives Support following model: 2013 for Pro A1493 A1502(MD864 MD865 MD293 MD294) SSD 2013 for Pro Retina A1398 A1502(ME864 ME865 ME866 ME293 ME294) SSD 2013 for A1465 A1466(MD711 MD712 MD760 MD761) SSD 2014 for A1465 A1466(MD711 MD712 MD760 MD761) SSD 2014 for Pro Retina A1502 A1398(MGX72 MGX82 MGX92 MGXA2 MGXC2) SSD 2015 for A1465 A1466(MJVM2 MJVP2 MJVE2 MJVG2) and Pro ME253 MD878 SSD 2016 for A1465 A1466 2017 for A1465 A1466 Material: Aluminum alloy colour: Black Package Contents: 1 x SSD Enclosure 1 x Data Cable 1 x Screwdriver(Screwdriver colors and styles are randomly distributed. Designation is not accepted) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.