Supports PCIe 1X card and 1X, 4X, 8X, 16X card (only 1X speed is available). PCI ports are not supported. Suitable for graphics cards, not for PCI-E 16X disk raid cards. PCI-E Express 1x to 16x extender converter riser card adapter male to female extender. With graphics card protection function, it can effectively isolate static electricity, avoid signal interference, reduce the risk of graphics card damage, and extend the service life of graphics cards. No driver is required, compatible with most mainstream graphics cards and motherboards on the market, and has strong versatility.