Share
Computer Accessories
Expected delivery 3 to 7 business days (exceptions applied)
Startech
2PORT PCIE SUPERSPEED USB 3.0 CARD ADAPTER W/ UASP LP4 POWER SUP
2PORT PCIE SUPERSPEED USB 3.0 CARD ADAPTER W/ UASP LP4 POWER SUP
VPN:PEXUSB3S25SKU:41918VCM UPC:65030854603
- Provides two external USB 3.0 ports with UASP support
- Supports data rates up to 5 Gbps
- Compliant with PCI Express 2.0 specifications
Couldn't load pickup availability
Volume discount available - Ask for quote..
View full details



Recently Viewed
2PORT PCIE SUPERSPEED USB 3.0 CARD ADAPTER W/ UASP LP4 POWER SUP
Product information summary

About the product
The PEXUSB3S25 2-Port PCI Express USB 3.2 Gen 1 Card lets you add two USB 3.2 Gen 1 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 3.2 Gen 1 bus-powered devices (500mA for USB 2.0).
Enhanced with UASP support (USB Attached SCSI Protocol), this USB 3.2 Gen 1 controller performs up to 70% faster than conventional USB 3.2 Gen 1 when paired with a (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 3.2 Gen 1 adapter is compliant with USB 3.2 Gen 1 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.
Backed by a StarTech.com 2-year warranty and free lifetime technical support.
UASP is supported in Windows 8, 8.1, Server 2012 and Linux kernel 2.6.37 or later. In testing UASP performed with up to a 70% faster read / 40% faster write speed over traditional USB 3.2 Gen 1 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 3.2 Gen 1 cards, a UASP-enabled StarTech.com enclosure, and a SATA III solid state drive.
More from the Manufacturer
- Provides two external USB 3.0 ports with UASP support
- Supports data rates up to 5 Gbps
- Compliant with PCI Express 2.0 specifications
- Optional LP4 power connector provides up to 900mA per USB port
- Supports USB Battery Charging Specification 1.2
- Fully compliant with USB 3.0 rev 1.0 and Intel xHCI rev 1.0 specifications
- Backward compatible with USB 2.0 and USB 1.0/1.1 devices
- Includes a Low-Profile/half-height installation bracket
Technical Specifications
Media & Performance | |
UASP Support | Yes |
Technical Information | |
Host Interface | PCI Express x1 |
Interfaces/Ports | |
Total Number of USB Ports | 2 |
Number of USB 3.2 Ports | 2 |
Miscellaneous | |
Additional Information | OS Compatibility:
|
Package Contents |
|
Platform Supported | Linux |
PC | |
Country of Origin | China |
Environmentally Friendly | Yes |
General Information | |
Product Type | USB Adapter |
Manufacturer Part Number | PEXUSB3S25 |
Manufacturer Website Address | http://www.startech.com |
Packaged Quantity | 1 Each |
Manufacturer | StarTech.com |
Product Name | 2 Port PCI Express PCIe SuperSpeed (5Gbps) USB 3.0 Card Adapter with UASP |
Brand Name | StarTech.com |
Physical Characteristics | |
Weight (Approximate) | 1.76 oz (50 g) |
Form Factor | Plug-in Card |
Length | 3.20" (81.28 mm) |
Height | 4.70" (119.38 mm) |
Width | 0.70" (17.78 mm) |
Product Color | Black |
Color Family | Black |
Software | |
Operating System Supported | Windows Server 2019 |
Windows 10 | |
Windows 11 | |
Windows 7 | |
Windows 8 | |
Windows 8.1 | |
Windows Server 2008 R2 | |
Windows Server 2012 | |
Windows Server 2016 | |
Windows Vista |
Product compare
Product warranty
Standard manufacturer warranty as applicable
Return policy
15 days return in original condition.
Price guarantee
!00% we are always lower than market price.
Explore branded collections
Our services

Partner with us

High business ethics and integrity

Consistence and focused performance

Shared vision and shared success

High confidentiality and security
-
See more
Design and build workplace, conference rooms & boardroom
-
See more
Managed IT service, help desks, servers, & networking
-
See more
Next generation devices assess, procure, customization
-
See more
Business continuity, security, backup & disaster recovery
-
See more
Cloud structure, migration, optimization and security
-
See more
Digitization, data retention, automation, Dev apps