Only supports Nvme protocol SSD, hard disk size support: 2280, 22110. No need to split, no need to drive. PLX8749 master control. Can be adapted to 2U and 4U chassis. Parameters: Main control chip: PEX8749 Power consumption (Max): 15W Port type: SFF8654-8i, M.2 2280/2211 Uplink bus: PCle 3.0 x16 Port rate: PCle 3.0 Power supply: PCle power supply Port mode: x16, x8 x8, x4 x4 x4 x4 Number of devices: Max 8 Device type: NVME SSD, U.2, network card, graphics card Block bar: full height x1, half height x1 Line sequence specification: A-B line Uplink: PCle 3.0x16 Downlink: Maximum 8 devices Interface configuration: Outgoing: 8654-8i*2 Inside: 8654-8i *1 Back: M.2 Nvme *2 Color:Black Material:PCB+Metal Package Contents: 1 * PCIe Expansion 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.