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4port Low Profile USB 3.0 PCI Express PCIe Card W/ SATA Power / Mfr. No.: PexUSB3s4v

4port Low Profile USB 3.0 PCI Express PCIe Card W/ SATA Power / Mfr. No.: PexUSB3s4v
Qty. Available: 10+
Item Number: sta-pexusb3s4v
Vendor Number: PEXUSB3S4V
Vendor: Startech.Com
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Add 4 external USB 3.0 ports to a low profile or standard computer, through PCI Express. 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 2-year warranty and free lifetime technical support.

Improved Performance with UASP

UASP is supported in Windows® 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® Ivy Bridge system, add-on USB 3.0 cards, a UASP-enabled enclosure, and a SATA III solid state drive.

General Information
Manufacturer Part NumberPEXUSB3S4V
Manufacturer Website Address
Product NamePCI Express USB 3.0 Card
Packaged Quantity1
Product TypeUSB Adapter

Technical Information

Host InterfacePCI Express x1


Total Number of USB Ports4
Number of USB 3.0 Ports4

Physical Characteristics

Form FactorPlug-in Card
Thickness700 mil
Weight (Approximate)1.59 oz


Package Contents
  • PCI Express USB 3.0 Card
  • Low Profile Bracket
  • Driver CD
  • Instruction Manual
Additional Information
  • Windows® 10 (32/64), 8 / 8.1 (32/64), 7 (32/64), Vista (32/64), XP (32/64)
  • Windows Server® 2012, 2008 R2, 2003
  • Platform SupportedPC
    Green CompliantYes
    Green Compliance Certificate/AuthorityRoHS


    Limited Warranty2 Year
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