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 the NVMe specification identification. PCI-E3.0 design, downward compatible 2.0, high speed transmission. Metal baffle configuration to secure the adapter firmly. The hot swap feature allows you to log in/out. Specifications: Material: PCB Color: Black Name: M.2 to PCI-E3.0 : approx. 12 * 10.5 * 1.8cm / 4.7 * 4.1 * 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.2 adapter card NGFF to PCI-E X4. Using this adapter card, ordinary PCI-E X4 interface can be transferred to M.2 NGFF interface. There are four fixed holes on the board, respectively 22*32mm, 22*42mm, 22*60mm and 22*80mm. 2. Support for Samsung PM961, 960EVO, SM961, PM951, sm951, INTEL 600P, Building T10 and other NVME M.2 protocols. M.2 of SATA protocol is not supported. 3. Standard version supports NVME M.2 of 2230 2242 2260 2280