1、[Working State] Only when four disks correspond to four LED indicators, the SSD access LED will light up, and the SSD read and write LED will flash. 2、[Support Function] The main board supports PCI‑E split or PCI‑E function, and supports PCI‑E 0 and 0 transmission protocols. 3、[Unique Design] 4 disk solid state drive array card, solid structure, thick PCB, stable PCIEX16 interface, care for your important data. 4、[Stable Performance] Do not drop disk, slow down, or block, and high power DC power chip to ensure the stable operation of M.2 NVME SSD. 5、[Multi System Compatibility] Compatibility with various mainstream operating systems, easy to install, drive free installation, plug and play. 1 x Adapter Card1 x Chassis Blank1 x Screwdriver4 x Screws Bag Item Type: Adapter CardMaterial: PCBModel: PN04-RTKHard Disk Support: SSD/M.2 PCI-E Device with M.2 NVME ProtocolTransmission Speed: 4 x 32Gbps