Features: Brand new and high quality. Supports controllers, plug and play. Effectively solves the shortage of PCI-E interfaces on the motherboard, expanding one interface to four. PCI-E slot power solution, no extra power cable needed. The complete set of wire rods is custom-made, never grab the line to plug in. This extension applies to the motherboard's PCI-E 1X slot. Connect the power cable to the floppy drive. When connecting the PCI-E extension, the computer needs to break the wires and reconnect. When connecting the wire, you must identify the direction. Do not reverse or displace it to prevent burning equipment. Connect the wire when the equipment socket is first connected, then connect the wire, avoiding breaking the pins in the socket if you connect too forcefully. Supported Operating Systems: DOS, Linux, Windows XP/7/8/10. Specifications: Material: Metal Color: Black Interface: 4 x USB Bus Interface: PCI-E x1 (for x4, x8, x16) Note: 1. Please allow 0-1 inch error due to manual measurement. Thank you for your understanding. 2. Monitor calibration is not uniform, so the color of the item shown in photos may differ slightly from the actual object. Package includes: 1 pc x PCI-E 1 to 4 Riser Card