Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si 1. The adapter card only supports NVMe M.2 NGFF SSD hard disks with specifications of 2230 2242. 2. Only supports 2016 version for Pro A1708 and 2017 version Pro A1708 laptops 3. It supports the installation of OS for OS Mojave, or higher versions, and does not support the installation of systems lower than 10.14 4. Simple installation: no driver is required. 5. Equipped with screw holes and screws, which can be fixedly installed on the computer motherboard Product name: adapter card Interface: NVMe to for Support hard disk size: 2230/2242 Colour:black Material:PCB Size:64.5 x 25mm Package Contents: 1 x Adapter card 1 x screw Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.