Description: Function: Effectively solve the lack of PCI-E interface on the motherboard, and interface can be expanded to 4. The USB connectors are gold plated to reduce inter interface interference and enhance data integrity. Plug type: the plug type design is adopted, which can be directly connected to the motherboard interface without an extension cable, and can be fixed to the chassis, greatly improving the stability and reliability. Stable: The main control board adopts the PCI-E interface power supply method, and no external power cord is needed, so that the power of the main board is not disturbed by the outside world, and the stability is . Reliable: Reduce the number of adapters and adapter wires, and one wire is directly connected to interface, which effectively reduces the connection interference and wire loss, ensures data reliability, and improves work efficiency. Note: The 4 USB3.0 ports on this adapter card are PCI-E signals, not USB signals, and cannot be connected to USB devices. Specification: Product Name: PCI-E 1X1 to 4 (USB devices cannot be inserted) Product Master: ASM1184E (4 ports) Product Interface: PCL-E 1X Support System: For WIN7 WIN10 32/64BIT/Linux Material: PCB Circuit Board Size Chart: 12cmx6.7cmx5.7cm/4.72inchx2.64inchx2.24inch Package Includes: 1Piece Riser Card 4 Piece 6PIN Extension Cables Note: Please allow slightly errors due to manual measurement and different monitors.