Features: brand new and high quality Adopt imported chip, AS3142, stable and high performance and high compatibility. Comes with a 4A power supply to process the chip, no external power supply is required. Adopt over-current and over-voltage for protection to protect your motherboard with great for protection All solid-state capacitors, not affected by harsh environments. USB3.1 PCI for Express card for laptop,applicable interface: PCI-E4X, PCI-E8X, PCI-E16X (Note: PCI E 1X slot is not supported) Specifications: Item: 7 Ports USB3.2/3.1 PCIE Expansion Card for Desktop Expansion interface: USB3.1 PCIE Type-C x 2+ Type-A x5 Product chip: ASM3142+VL822 Transferring Speed up to: 10Gbps Max Backward compatible to USB 1.1/USB 2.0./USB3.0 Suppots PCI Low profile Size approx : 120x90mm/4.72x3.54in Color: Black System Requirements: for Windows 2000/XP/Vista/7/10 Note: There might be 1-2 for cm error of size for manual measurement. The color's deviation might differ due to different monitor settings, please kindly understand. Package includes: 1PC x Pcie Usb3.1 Expansion Card 1PC x Driver CD 1PC x Manual