Features: USB3.2 Type-C PCI-Express expansion card for laptop supports PCI-Express X4 XX6 Lanes With USB3.1 Type-C x 4 ports & USB3.1 Type-A x 4 ports High performance ASM3142 chip,can transferring up to10Gbps+10Gbps Supports USB 3. 2 Backward compatible to USB 1.1/USB 2.0./USB3.0/3.1 Our expansion card features a high-performance PCIe interface, ensuring maximum bandwidth and throughput- for all your connected devices. Enjoy dual 10Gbps fast- data transfer speeds and seamless-connectivity with all your favorite UsbC devices. Specifications: Product Model: ULS-UP10084 Extension interface: USB3.1 TypeC x 4&USB3.1 Type-A x 4 Product chip: ASM3142 Speed:Dual-10G Applicable interfaces: PCI-E4X, PCI-E8X, PCI-E16X (note: for PCI-E 1X slot is not supported) System requirements:for Windows2000/XP/Vista-/7/10 Size：As Pictures Package Includes: 1PC PCIe US3.1 Expansion Card 1PC Drive disc 1PC Instructions 2PCS Screw 1PC Color box note: There might be 1-2cm error of size for manual measurement. The color deviation- might differ due to different monitor- settings, please kindly understand.