1. This product is a PCI-E to M.2 hard drive NVME adapter card. The adapter card uses differential line alignment to support PCI-E 3.0 1X signals. Compatible with all WINDOWS systems, LINUX and MAC systems 2. Support Samsung PM961, 960EVO, SM961, PM951, sm951, INTEL 600P, LITE-ON T10 NVME protocol M.2, does not support SATA protocol M.2, standard version supports NVME M.2 2230, 2242, 2260, 2280. 3. M.2 NGFF to PCI-E 14 transfer card, using this adapter can convert ordinary PCI-E 1X interface to M.2 NGFF interface. 4. There are 4 fixing holes on the board, which are 22 x 32 mm, 22 x 42 mm, 22 x 60 mm and 22 x 80 mm. Material: Plastic colour: Black Package Contents: 1 x PCIE Adapter Card 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.