Supports two M.2 SSD simultaneously (One SATA interface and one NVMe interface) Converts one M.2 NVMe SSD (M Key) interface to PCIe 3.0 x4 interface (PCIe 2.0 Compatible), Converts one M.2 SATA SSD (B Key or B+M Key) interface to SATA 6Gbps interface (SATA cable connection required). With advanced heat sink solution,PCB 24 X 5 copper hole effective ventilation heat dissipation,Including 2 heat sinks Supports M.2 SSD size 2230, 2242, 2260, 2280, 22110mm Including both regular size and low-profile slot brackets for flexible system chassis installation. LED power and data transfer status. No driver installation required