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Startech Pexusb3s25 2 Port Pcie Usb 3.0 Card With Uasp - PS2 - Cables - COMPUTER HARDWARE

Startech Pexusb3s25 2 Port Pcie Usb 3.0 Card With Uasp


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Retail Price $68
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SKU#: PEXUSB3S25 / ITEM NO: 588799 / BRAND: Startech
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2 Port PCI Express (PCIe) SuperSpeed USB 3.0 Card Adapter with UASP - LP4 Power - Dual Port USB 3.0 PCIe Controller - Dual Profile PCI Express 5Gbps USB 3 Adapter

Startech Pexusb3s25 2 Port Pcie Usb 3.0 Card With Uasp

Product Overview

The PEXUSB3S25 2-Port PCI Express USB 3.0 Card lets you add two USB 3.0 ports to your PCI Express-enabled computer system, with an optional LP4 power connector to connect to your system power supply and deliver up to 900mA of power per port to USB 3.0 bus-powered devices (500mA for USB 2.0).

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 is not supported by all operating systems). 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 PCIe USB 3.0 adapter is compliant with USB 3.0 standards for data transfer speeds up to 5 Gbps, while still offering backward compatibility with existing USB 2.0 / 1.1 devices. For added versatility, the controller card is equipped with a standard profile bracket and includes a low-profile/half-height bracket for installation in small form-factor computers.

Product Specifications

Warranty Information


2 Years

Physical Characteristics

Product Height

4.7 in [120 mm]

Product Length

3.2 in [82 mm]

Product Weight

1.8 oz [51 g]

Product Width

0.7 in [18 mm]


Bus Type

PCI Express

Card Type

Standard Profile (LP bracket incl.)

Chipset ID

Renesas / NEC - µPD720202

Industry Standards

USB 3.0 Specification Rev. 1.0 USB Battery Charging Specification Rev. 1.2 PCI Express Base Specification Rev. 2.0 Intel xHCI Specification Rev. 1.0


USB 3.0

Port Style

Integrated on Card




Maximum Cable Length

9.8 ft [3 m]

Maximum Data Transfer Rate

5 Gbps

Type and Rate

USB 3.0 - 5 Gbit/s

UASP Support



Connector Type(s)

1 - PCI Express x1 Male

External Ports

2 - USB 3.0 A (9 pin; SuperSpeed) Female

Internal Ports

1 - LP4 (4 pin; Molex Large Drive Power) Male


OS Compatibility

Windows 10 (32/64), 8 / 8.1 (32/64), 7 (32/64), Vista (32/64), XP (32/64) Windows Server 2012, 2008 R2, 2003  Linux 2.6.31 or later

Special Notes / Requirements


Devices that do not comply with the USB Battery Charging Specification may only receive standard USB power.

System and Cable Requirements

Available PCI Express slot



5~85% RH

Operating Temperature

0°C to 50°C (32°F to 122°F)

Storage Temperature

-20°C to 60°C (-4°F to 140°F)

Packaging Information

Shipping (Package) Weight

5.4 oz [153 g]

What's in the Box

Included in Package

1 - PCIe USB 3.0 Card


1 - Low Profile Bracket


1 - Driver CD


1 - Instruction Manual

Brand StarTech
Interface USB 3.0
Speed Super Speed
Dimension Product Height 4.7 in [120 mm]
Product Length 3.2 in [82 mm]
Product Width 0.7 in [18 mm]
Ports 2
Manufacturer Warranty
1 Year Return to Base Warranty
Manufacturer Contact Info

Our customer service staff are standing by to assist you. Should you have questions about this product, please complete the form below and we'll be in touch soonest possible. We aim to answer your enquiries within 24 hours.

For IMMEDIATE customer service assistance or help with an order please call our Customer Service Team on: 02 9011 2078
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