Expand more interfaces for your computer. Adds four rear USB 3.0 ports from a 19/20-pin header. USB 3.0 is backward compatible with USB 1.1 and USB 2.0, supporting a wide range of USB devices for various applications. Pure copper core ensures excellent conductivity and faster data transmission. The 19/20-pin connector expands to four USB 3.0 ports by connecting to the corresponding 19/20-pin header on the motherboard or riser card. USB 3.0 interface complies with USB 3.0 specifications, supporting maximum transfer speeds up to 5 Gbps. Backward compatible with USB 2.0 and USB 1.1. The interface is constructed with high-strength metal material, resistant to corrosion, durable, and supports hot swapping. High-speed transmission at up to 5 Gbps, providing faster and more stable performance while maintaining compatibility with older USB standards. Product Specifications: Color: Black Material: Tinned pure copper Model: U3AF4D Transmission Rate: 5 Gbps Bus Interface: 19/20-Pin Expansion Interface: USB 3.0 x 4 Operating Temperature: -50°C to 70°C Compatible Systems: XP, Windows 7, Windows 10, Windows 11, Linux, etc. Length: 60 mm Package Contents: 1 x 19/20-Pin to USB 3.0 Adapter Cable Note: Other items not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement allows an error of +/- 1-3 cm.