USB 3.1 PCI-Express add-on card 2-ports: standard type-A and USB type-C connector Extra power supply SATA 15-pin connector (internal) Internal PC interface: PCI Express x4, v.3.0; SATA 15-pin male power connector External output: USB 3.1 (Gen2) AF; USB type C female Chipset: ASM1142 Additional low-profile bracket Dimensions: 120 x 78 x 18 mm Net weight: 40 g Windows 7/8/10 (x86 / x64) Free PCI-Express 4-lane (x4) slot or more (x8 / x16 / x32)