PCIE X1 one for four PCIE X1 interface to USB interface (USB devices are not supported) The PCI-E X1 interface can be expanded as long as motherboard has PCI Express X1/X4/ x8/X16 slots, plug and play, convenient and fast. Adopting gold immersion technology, good conductivity, , good contact, improve data transmission rate Using high-quality material, high temperature resistance, cold resistance, long-term use without deformation, so as to long-term stability Applicable system: Windows XP/Win7 /Win8/Win8.1Win10, etc. Product name: PCI-EX1 one for four Working environment: 0Celsius-70Celsius Type: PCI-Express Cables Model Number: Gold Plated PCI 1 to 4 Adapter Card Interface Type: PCI Express Bus Type: PCI-Express x1 colour:Black Material:PCB size:120 x 66 x 56MM Package Contents: 1 x Adapter Card Only above package content, other products are not included. Note: Light and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.