Features: brand new and high quality Designed 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 interface Size: approx.120x68x58mm/4.72x2.68x2.28in Compatible 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