Features: The adapter card uses differential line alignment to support PCI-E 3.0 1X signal. Support M.2 SSD hard drives for M Key only, please confirm NVMe specification identification. Support Samsung PM961, 960 EVO, SM961, PM951, sm951, INTEL 600P, LITE-ON T10 NVME M.2 protocols. Metal baffle configuration to secure the adapter firmly. Hot swap feature allows you to log in/out. The standard version supports NVME M.2 of 2230 2242 2260 2280. Specifications: Material: PCB Color: Black Name: PCI-E to M.2 expansion card Interface: PCI, PCI Express Size: approx . 12 * 9.2 * 1.8cm / 4.7 * 3.6 * 0.7in Package Weight: Approx. 69g / 2.4oz Support system: compatible with all WINDOWS, LINUX systems Package list: 1 * M.2 to PCI-E3.0 X4 expansion card 1 * screw pack Note: 1. M expansion card .2 NGFF to PCI-E 14. Using this adapter, ordinary PCI-E 4X interface can be converted to M.2 NGFF interface. 2. There are four fixed holes on the board, respectively 22*32mm, 22*42mm, 22*60mm and 22*80mm. 3. Support Samsung PM961, 960 EVO, SM961, PM951, sm951, INTEL 600P, LITE-ON T10 NVME M.2 protocols. does not support SATA M.2 protocol. 4. Standard version supports NVME M.2 of 2230 2242 2260 2280