Product name: 2-port USB 3.1 PCIE Expansion Card Bus Type: PCI Express X1 3.0, Compatible PCIe x4/x8/x16 Slot. Good Compatibility: Compatible with 7/8/8.1/10/11, Linux OS. PCI-E to USB3.1: Expand your computer with two more ports USB3.1 Gen 2: The PCI-E card is equipped with 10Gbps bandwidth, which ensures fast data mission, real speed of USB3.1 for individual port. Plug & play and hot swapping capability Stable and reliable ASMEDIA Chipset ASM3142 The 15-pin power connector supplies power to USB-C enabled devices, and supports up to 5V 900mAh output on each USB 3.1 port. Specs: 1. Supports 10Gbps PCI-E bus with full duplex channel. 2. Built-in over current protection and short circuit protection on each USB port. 3. Support SuperSpeed+ (10 Gbps), SuperSpeed (5 Gbps), HighSpeed (480 Mbps), and FullSpeed (12 Mbps) (Note: The actual mission speed is limited by the setting of the device connected.) 4. Support USB 3.1 devices,backwards compatible with USB 3.0, 2.0 & 1.1 5. Support High-speed PCI-E 3.0 specification 6. Support PCIe 1.0, PCIe 2.0, or PCIe 3.0 motherboard, Compliant with PCI Express Base 3.0 Specification, Compliant with Universal Serial Bus 3.1 Specification Note: NOT compatible with macOS operating systems. Colour:Black Material:PCB Package Contents: 1 x USB3.2 expansion card GEN2 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.