speed USB 3.0 expansion with reliable power and broad compatibility Speed and compatibility USB 3.0 interface delivers up to 5 Gbps transmission rate Backward compatible with USB 2.0 and USB 1.1 devices Dual device support with powered output Supports connecting two USB devices simultaneously The USB interface can provide a 5V 2A power supply to connected external devices PCIe and USB 3.0 standards Conforms to PCI Express standard version 2.0 Meets the universal USB 3.0 standard Power efficiency and ease of use Includes two power modules, eliminating the need for an additional external power supply Use scenarios Expand desktop PC USB 3.0 capability Add fast external storage, printers, or other USB peripherals that benefit from transfer speeds Powerhungry external devices without extra adapters Run devices that require stable 5V 2A power directly from the card, reducing clutter and spare power bricks Flexible upgrades for older systems Improve USB 3.0 support on systems with PCI Express slots by adding a capable, buspowered expansion option