Features: 100% brand new and high quality Controller support, plug and play. Effectively solve the lack of PCI-E interface on the motherboard, and one interface can be expanded to 4. PCI-E slot power solution, no extra power cable needed. The form a complete set of wire rod is customized, never grab line to plug in. This extension is applicable to the mainboard PCI - E 1X slot, Please plug in the power cord for the floppy. When plug PCI - E extension must be computer broken wires plug again. When plug wire must identify the direction, not to counter or offset, prevent burning equipment, plug wire when the socket of equipment first, then plug wire, avoid too hard plug socket pin is broken. Supported OS: DOS, Linux, Windows XP/7/8/10 . Package Includes: 1PC x 1 to 4 PCI-E Adapter Card 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 at the same time 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 may be slightly different from the color shown on the pictures. Thanks! Please allow 1-3mm measuring deviation due to manual measurement.