PDU3 USB3.0 Expansion Card If you are not ready yet to switch out your motherboard, Transcend's USB 3.0 Expansion Card will allow you an opportunity to reap the benefits of USB 3.0 transfer speeds. This easy-to-install card enables you to add revolutionary new USB 3.0 ports to any desktop computer with a PCI Express slot, delivering data transfer rates up to 10 times faster than Hi-Speed USB (USB 2.0) with optimized power efficiency. The Expansion Card's PCI Express 2.0 x1 connection interface is compatible with virtually all current motherboards, and guarantees unrestricted two-way communication between your PC and any USB devices you plug into the card. With two SuperSpeed USB 3.0 ports, which have bandwidth up to 5Gb/s, Transcend's USB 3.0 Expansion Card is ideal for use with new USB 3.0 high-capacity external storage devices, such as external hard drives and USB flash drives. - Add USB 3.0 ports to any desktop computer with a PCI Express slot - Connection bandwidth up to 5Gbits per second (in USB 3.0 mode) - Ultra-fast PCI Express interface eliminates speed bottlenecks - Installs easily in any PCIe slot, including x1 and x16 slots - Backwards compatible with USB 2.0 and USB 1.1 devices - Supports PCI bus power management interface rev. 1.2 - Compact size saves space and inside your PC - Fully compatible with PCI Express 2.0 - Two external USB 3.0 ports - xHCI compliant - 2-year warranty Dimensions (PCB size): 80mm (L) × 69mm (W) Weight: 47g USB Bus Power Output: 5V DC, 900mA (max) per port PC Interface: PCI Express 2.0 single lane (x1) USB Ports: 2 external (supports USB 1.1 / 2.0 / 3.0) Connection Bandwidth: Up to 5Gbits per second Operating Temperature: 5? (41?) to 35? (95?) Operating System Supported: Windows 7, Vista, XP Certificates: CE, FCC, BSMI