Expand your motherboard's capabilities with this 1 to 4 PCI-E USB3.0 Adapter Card! Features: Brand new and high quality. Controller support, plug and play. Effectively solves the shortage of PCI-E interfaces on the motherboard, expanding one interface into four. PCI-E slot power supply, no extra power cable needed. The complete set of wires is customized for easy installation. This extension is applicable to the motherboard PCI - E 1X slot. Connect the power cord for the floppy drive. When plugging in the PCI - E extension, ensure the computer is powered off. When plugging in the wire, identify the direction to avoid reversing or offsetting, preventing equipment from burning. Plug in the wire when the equipment socket is first, then plug in the cable, avoiding excessive force that could break the socket pins. Supported OS: DOS, Linux, Windows XP/7/8/10. Specifications: Type Name: 1 to 4 PCI-E USB3.0 Adapter Card Color: Green Material: Metal + Plastic Bus: PCIE X1 can support PCI-E X4 X8 X16 and other interfaces simultaneously Port Quantity: 4 x USB Size: approx. 120x80x62mm/4.72x3.15x2.44in Supported OS: for DOS, for Linux, for Windows XP/7/8/10 Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-3mm measuring deviation due to manual measurement. Package Includes: 1pc x 1 to 4 PCI-E Adapter Card