2 Port PCI Express SuperSpeed USB 3.0 Card Adapter with UASP Support - PEXUSB3S2

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Product Overview

Add 2 USB 3.0 ports to your desktop computer through a PCI Express expansion slot. The PEXUSB3S2 PCI Express USB 3.0 card lets you add two USB 3.0 ports to your PC through a PCI Express slot.

Featuring a native NEC PCI Express host controller chipset, the USB 3.0 standard supports transfer rates of up to 5Gbps, while still providing backward compatibility for older USB 2.0 (480Mbps) and 1.1 (12Mbps) 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.

In addition to providing a much faster transfer rate the PEXUSB3S2 USB 3.0 card also supplies 900mA of power per USB port, allowing more and more external devices to operate without the need of an additional power source.

Backed by a lifetime 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.


Mfg Part# PEXUSB3S2
SKU 212989708
UPC 065030837125
UPC 14 00065030837125
Product Type USB Adapter / USB Adapter
Green Compliant Yes / Yes
Green Compliance Certificate/Authority RoHS / RoHS
Total Number of USB Ports 2 / 2
Height 3" / 3"
Width 4.8" / 4.8"
Brand Name /
Form Factor Plug-in Card / Plug-in Card
Manufacturer /
Product Model PEXUSB3S2 / PEXUSB3S2
Product Name 2-port PCI Express SuperSpeed USB 3.0 Card / 2-port PCI Express SuperSpeed USB 3.0 Card
Manufacturer Part Number PEXUSB3S2 / PEXUSB3S2
Limited Warranty 2 Year / 2 Year
Host Interface PCI Express / PCI Express
Thickness 750 mil / 750 mil
Weight (Approximate) 2.12 oz / 2.12 oz
Tech Specs
Ports 2 x Type A Female USB 3.0 - USB External
Product Type USB Adapter
Manufacturer Part Number PEXUSB3S2
Manufacturer Website Address
Product Name 2-port PCI Express SuperSpeed USB 3.0 Card
Brand Name
Additional Information SuperSpeed USB 3.0 connectivity at up to 5 Gbps and 80% more power than USB 2.0 Dual profile design to fit into Full or Low Profile/small form factor (SFF) systems Backed by a lifetime warranty and free lifetime technical support
Dimensions 3" Height x 4.76" Width x 0.75" Thickness
Weight (Approximate) 2.12 oz
Form Factor Dual-profile Plug-in Card
Power Source Self-powered
Host Interface PCI Express
Data Transfer Rate 5 Gbps USB 3.0 SuperSpeed
Device Support Up to 127 USB
Platform Support PC
Standard Warranty Lifetime
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