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 systems, LINUX and systems 2. Support PM961, 960EVO, SM961, PM951, sm951, 600P, 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.