Features: 1.Support high?speed PCI?E 1X, 4X, 8X and 16X cards, but only work at 1X speed. 2.The PCI?E card has a new design with dual vertical 90 directions, and the high?speed flexible cable is suitable for 1U, 2U and ATX/BTX chassis. 3.Easy to install, without any soft driver, golden finger protection cover and dustproof design. 4.With experienced design and durable materials for high frequency and low attenuation. 5.The PCB is fixed and fixed with bolts and nuts to prevent tearing and short-circuit of the cable solder joints. 6.With stable PCI-E Gen3 8Gbps or higher rate, fast transmission and good performance. specification:Item Type: Extension Cable Material: PE+tinned copper+TPE Support high-speed PCI-E 1X, 4X, 8X and 16X cards, but only work at 1X speed. Suitable for 1U, 2U and ATX/BTX chassis. Installation Notes: 1. Before installation, make sure that the motherboard, graphics card and other PCI-E interface cards are in a power-off state. 2. In order to prevent static electricity from damaging the motherboard and the electronic components on the graphics card, please wear static clothes and anti-static wristbands when installing. If you don't have static clothes and wristbands, please touch the grounded metal objects with your hands before installation to discharge human body static electricity. . 3. Before the installation is completed, do not turn on the power to start the computer, this operation may cause damage to the motherboard and graphics card. 4. Please refer to the installation guide for installation. 5. Please keep the motherboard and graphics card away from humid air and dust in order to prolong its service life. Size: Approx. 25mm / 1in 11.3mm / 0.4in 52mm / 2in 44.83mm / 1.8in 1.37mm / 0.1in 15.25mm / 0.6in PackageList: 1 x Extension Cable 1 x User Manual