Includes low profile bracket for small form factor computers. Backwards compatible with USB 2.0 devices. Supports simultaneous operation of multiple USB 3.0 and USB 2.0 devices. Supports 2 downstream ports for all speeds. Supports Windows 10/7/Vista/XP 32/64-bit, Server 2003-2008 32/64-bit. Upgrade your PC with support for the latest in USB technology with a 2-Port SuperSpeed USB 3.0 PCI Express Adapter Controller Card. SuperSpeed USB 3.0 boasts data transfer rates of up to 5Gbps - more than 10X that of its predecessor. With quick and easy installation, you'll enjoy the lightning fast transfer rates of USB 3.0 devices performing at full speed potential. Specifications: Data Transfer Rate: up to 5Gbps. Output: 5V/900mA MAX (each USB port). External Ports: 2x USB 3.0. Internal Ports: 1x 4-Pin Power Connector. Host Interface: PCI Express (PCI-E). Chipset: NEC D720200AF1. Regulatory Approvals: FCC, CE. Bus-powered mode and no external power required for most peripherals. Molex power required. Package Includes: 1x 2-Port USB 3.0 PCI Express Controller Card, 1x Low Profile Bracket, 1x Installation CD. Includes low profile bracket for small form factor computers Backwards compatible with USB 2.0 devices Supports simultaneous operation of multiple USB 3.0 and USB 2.0 devices Supports 2 downstream ports for all speeds Supports Windows 10/7/Vista/XP 32/64-bit, Server 2003-2008 32/64-bit