Features:brand new and high qualityDesigned with 4 USB ports: This PCI-E to USB riser board is designed with 4 USB ports that support USB 3.0, which can provide high-speed data transfer.Can be used in many kinds of computer operating system: The PCI-E to USB Extender Card can be used in many kinds of computer operating system, and it is easy to install and remove.Designed with a PCI-E X1 bus interface: The 4-port PCI-e USB 3.0 is designed with a PCI-E X1 bus interface, it is powered by a PCI-E interface, which makes the power supply is stable and safe.LED light: The PCI-E 1 to 4 adapter has an LED light that makes it more convenient to check the working status of the board.4 USB ports: The PCI-E to USB adapter has 4 USB ports that can connect to 4 PCI-E riser boards and is convenient to use. Specifications:Bus interface: PCI-E x 1(for 4x, 8x, 16x/graphic card interface)Interface: PCI-E USB3.0 interfaceSize: approx. 120x68x58mm/4.72x2.68x2.28inCompatible System: for WINXP, WIN7, WIN8, WIN10, LINUX DOS Note:1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from actual item. Package includes:1PC x PCI-E Riser Card