Features

  • Time-saving file transfers, up to 70% faster than traditional USB 3.0 when used with a UASP-supported enclosure
  • USB 3.0 PCI-E card has 4 external USB 3.0 ports using a space-saving stacked layout
  • 4 external USB 3.0 ports in a stacked layout
  • Power high-powered USB devices as necessary, with the optional SATA power connector
  • UASP support for more efficient data transfer


The PEXUSB3S4V StarTech 4 Port (PCIe) SuperSpeed USB 3.0 Controller Card Adapter with SATA Power adds 4 external USB 3.0 ports to any PCI Express-enabled computer system with support for data rates up to 5 Gbps, while remaining backward compatible with USB 2.0 / 1.x devices.

Enhanced with UASP support (USB Attached SCSI Protocol), this USB 3.0 controller performs up to 70% faster than conventional USB 3.0 when paired with a UASP supported enclosure (Note: UASP requires a compatible operating system). Using a more efficient protocol than the traditional USB BOT (Bulk-Only Transport), UASP technology optimizes transfers by allowing multiple commands to be processed simultaneously, significantly increasing transfer speeds for less wait time on data transfers. See our UASP test results below for further details.

The card uses a "stacked" port layout that places the ports one on top of the other, enabling all four USB 3.0 ports to be external facing, while still allowing the card to fit into a small form factor/low profile computer system using the included low profile bracket.

Plus, with a built-in SATA power connector, each USB port can provide up to 900mA of power to devices that draw power from a host bus connection (500mA for USB 2.0) by connecting to your computer power supply.

Backed by a StarTech.com 2-year warranty and free lifetime technical support.

Improved Performance with UASP

UASP is supported in Windows® 8 and Server 2012. In testing UASP performed with up to a 70% faster read / 40% faster write speed over traditional USB 3.0 at peak performance.



At the same peak in testing, UASP also showed up to an 80% reduction in required processor resources.



Test results were obtained using an Intel® Ivy Bridge system, StarTech.com add-on USB 3.0 cards, a UASP-enabled StarTech.com Enclosure, and a SATA III solid-state drive.
Interfaces/Ports
Ports4 port(s) x USB
System Requirements
Operating Systems SupportedWindows 10 (32/64-bit), 8/8.1 (32/64-bit)/Windows 7 (32/64-bit)/Vista (32/64-bit)/XP (32/64-bit)
Environmental
EnvironmentalStorage Temperature 5C to 50C - Storage Humidity 20% to 80%
Physical
Form FactorPCI Card