Features: Brand new and high quality Pci-e 1X to 4USB bus interface PCI-E card effectively solves the problem of insufficient PCI-E ports on the motherboard. Pci-e 1X to 4 USB: Bus interface Pcie X1 - also for X4, X8, X16 interface). The 4-port USB PCI-E card is designed with 4 USB ports supporting USB 3.0, so it can provide fast data transfer speed. PCI-E slot power solution, no need for extra power cable, so that the motherboard power supply is not disturbed by the outside world and has high stability. The PCI-E X1 to USB adapter is for many types of computer systems and is easy to use, System support: Win7 / Win8 / Win10/ Win XP / DOS / Linux. Specifications: Bus interface: PCI-E x 1. (for 4x, 8x, 16x/graphics card interface) Interface: PCI-E x4 usb interface. Size: Approx. 120x75x55mm/4.72x2.95x2.17in Color: Black Note: Please allow 0-1cm error due to manual measurement. Please make sure you don't mind before bidding. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1x PCI-E Riser Card