Add 2 USB (Universal Serial Bus) 3.0 ports to your desktop computer through a PCI Express expansion slot Super Speed USB (Universal Serial Bus) 3.0 connectivity at up to 5 Gbps & 80% more power than USB (Universal Serial Bus) 2.0 Dual profile design to fit into Full or Low Profile/small form factor (SFF) system Backed by a Star Tech.com lifetime warranty & free lifetime technical support Providing speeds up to 10x faster than that of USB (Universal Serial Bus) 2.0, this PCI Express USB (Universal Serial Bus) 3.0 card enables you to access your data & transfer files much faster than USB (Universal Serial Bus) 2.0, by adding two USB (Universal Serial Bus) 3.0 ports to your PCI Express capable PC. Featuring a native NEC PCI Express host controller chipset, the new USB (Universal Serial Bus) 3.0 standard supports transfer rates of up to 5 Gbps, while still providing connectivity & support for the older USB (Universal Serial Bus) 2.0 (480 Mbps) & 1.1 (12 Mbps) devices. In addition to providing a much faster transfer rate the PEXUSB3S2 USB (Universal Serial Bus) 3.0 card also supplies 900m A of power per USB (Universal Serial Bus) port, allowing more & more external devices to operate without the need of an additional power source. WhatÂ’s in the box PCI Express USB (Universal Serial Bus) 3.0 Card LP4 Molex to SATA Adapter Low Profile bracket Installation CD Instruction Manual