StarTech 4 Port USB 3.0 PCI Express Card with UASP Support

The PEXUSB3S4V PCI Express USB 3.0 Card (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(R) 8, Server 2012 and Linux kernel 2.6.3 or later. 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(R) Ivy Bridge system, StarTech.com add-on USB 3.0 cards, a UASP-enabled StarTech.com enclosure, and a SATA III solid state drive.

Connector(s) Connector Type(s) PCI Express x1 Male External Ports USB Type-A (9 pin) USB 3.0 Female Internal Ports SATA Power (15 pin) Plug Environmental Humidity 20% ~ 80% RH Operating Temperature 5C to 50C (41F to 122F) Storage Temperature -25C to 70C (-13F to 158F) Hardware Bus Type PCI Express Card Type Standard Profile (LP bracket incl.) Chipset ID NEC uPD720201 Interface USB 3.0 Port Style Integrated on Card Ports 4 Packaging Information Package Quantity 1 Shipping (Package) Weight 0.1 kg [0.2 lb] Performance Type and Rate USB 3.0 - 5 Gbit/s UASP Support Yes Physical Characteristics Product Height 68 mm [2.7 in] Product Length 75 mm [3 in] Product Weight 45 g [1.6 oz] Product Width 19 mm [0.7 in] Software OS Compatibility Windows XP, Vista, 7, 8, 8.1, 10
Windows Server 2003, 2008 R2, 2012, 2012 R2, 2016
Special Notes / Requirements Note The maximum throughput of this card is limited by the bus interface. If used with PCI Express Gen 1.0 enabled computers, the max throughput is 2.5 Gbps. If used with PCI Express Gen 2.0 enabled computers, the max throughput is 5 Gbps. System and Cable Requirements Available PCI Express expansion slot What's in the Box Included in Package Driver CD Instruction Manual Low Profile Bracket PCI Express USB 3.0 Card