PCI Express USB 3.0 Host Card Adapter with 4 Ports. The StarTech PCI Express USB 3.0 card with 4 ports allows you to add 4 dedicated USB 3.0 ports with 5 Gbps to your PCIe x4-capable computer. This independent port architecture enhances USB 3.0 performance by transmitting over 4 separate channels to your computer, enabling faster file transfers.

• Provides four external, independent USB 3.0 ports
• Supports up to 20 Gbps total transfer bandwidth - up to 5 Gbps per port
• UASP support for all four ports
• PCIe x4 interface compatible with PCI Express 2.0 specifications
• Optional LP4 or SATA power connector with up to 900 mA per USB port
• Supports USB Battery Charging Specification 1.2 (only in Apple mode)
• Fully compliant with USB 3.0 Revision 1.0 and Intel xHCI Revision 1.0 specifications
• Hot-swap functionality for connecting/disconnecting devices without powering down the system

The controller card is compliant with USB 3.0 standards while ensuring backward compatibility with existing USB 2.0/1.1 devices. The PEXUSB3S44V USB 3.0 PCIe card comes with a standard bracket and includes a low-profile/half-height bracket for installation in small form factor computers.