Welcome! This USB 3.0 expansion card offers: 5 Gbps Transfer Speed: Boasting a transfer rate of up to 5 Gbps, this 19-pin card expands your system with two USB 3.0 ports and is compatible with PCI-E X1, X4, X8, and X16 slots. Wide Compatibility: Backward compatible with USB 1.1 and 2.0, it supports a wide range of USB devices, making it suitable for various applications. Independent Power Supply: Equipped with two independent power management chips, no external power supply is needed. Each USB port receives dedicated 2A power. Independent Protection: Features independent surge protection, instantly cutting power in case of short circuits or overcurrent from connected devices. Excellent Heat Dissipation: Constructed with high thermal conductivity materials for efficient heat dissipation, ensuring continuous, safe, and stable operation. Features: Item Type: PCI-E to USB 3.0 Expansion Card Material: PCB Transfer Speed: 5 Gbps Interface: 2 x USB3.0, 1 x 19-pin interface Slots for: PCI-E X1, X4, X8, X16 Compatible System: XP, Win7, Win8, Win8.1, Win10, Linux, etc.