Add two USB 3.1 Type-C ports to your PCIe-enabled desktop computer with this adapter. Self-Powered: Each interface has an individual 3A power supply, with a total of 6A across both interfaces, no extra power cable needed. High Speed: Utilizes a for NEC main control chip to achieve USB 3.1 Max 10Gbps transfer speed; both USB C ports can work simultaneously. Comprehensive Protection: Each interface has separate insurance with overcurrent and short circuit protection. Stable and Faster: Features 2 conductive polymer material capacitors to ensure a more stable power supply to each interface. Wide Compatibility: Supports PCIE X1 / X4 / X8 / x16 slots and offers plug & for play simplicity in for Windows 10, 8.1, 8 (32 / 64bit) and for Windows Server 2012, 2012R2, 2016, 2019, for Windows 7, XP, Vista and older systems. Output Interface: 2 x USB-C 3.1 Input Interface: PCI-E for PCI-E X1 X4 X8 X16 Transfer Rate: USB 3.1 10Gbps, USB 2.0 480Mbps Compatible OS: for Windows 10 / 8.1 / 8/7 / XP 64-bit and 32-bit Size: approx. 120x80x58mm/4.72x3.15x2.28in Note: Not for LINUX and for Mac OS. WIN8 and WIN10 users do not need to install a driver. For XP and WIN7 users, it is necessary to download and install the driver. Package Includes: 1PC x 2 Port PCI-E to USB 3.1 Expansion Card