
Description
StarTech.com 2 Port PCIe SuperSpeed USB 3.0 Card w/ UASP 5Gbps LP4 Power
This is a StarTech.com 2 Port PCI Express (PCIe) SuperSpeed USB 3.0 Card Adapter with UASP - 5Gbps - LP4 Power (model PEXUSB3S25). The PEXUSB3S25 2-Port PCI Express USB 3.2 Gen 1 Card adds two USB 3.2 Gen 1 ports to any PCI Express-enabled computer system. It includes an optional LP4 power connector via included SATA to LP4 cable to deliver up to 900mA of power per port to USB 3.2 Gen 1 bus-powered devices (500mA for USB 2.0). UPC: 065030854603. Compliant with USB 3.2 Gen 1 standards for data transfer speeds up to 5 Gbps and backward compatible with USB 2.0/1.1 devices.
Advanced Features & UASP Performance
- UASP Support (USB Attached SCSI Protocol) – Performs up to 70% faster read/40% faster write speeds over traditional USB 3.2 Gen 1 at peak performance; up to 80% reduction in processor resources. Uses efficient protocol allowing multiple simultaneous commands for optimized transfers. Supported in Windows 8, 8.1, Server 2012, Linux kernel 2.6.37 or later (UASP not supported by all OS).
- Enhanced Power Delivery – Optional LP4 connector connects to system power supply for reliable power to demanding devices.
- Versatile Installation – Includes standard profile bracket and low-profile/half-height bracket for small form-factor computers.
- Backward Compatibility – Works with existing USB 2.0/1.1 devices.
- Plug-and-Play Design – PCI Express x1 host interface for easy integration into desktop systems.
Comprehensive Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | StarTech.com |
| Brand Name | StarTech.com |
| Manufacturer Part Number | PEXUSB3S25 |
| UPC | 065030854603 |
| Product Type | USB Adapter |
| Product Name | 2 Port PCI Express PCIe SuperSpeed (5Gbps) USB 3.0 Card Adapter with UASP |
| Host Interface | PCI Express x1 |
| UASP Support | Yes |
| Total Number of USB Ports | 2 |
| Number of USB 3.2 Ports | 2 |
| Data Transfer Rate | Up to 5 Gbps (USB 3.2 Gen 1) |
| Power Output Per Port | Up to 900mA (USB 3.2 Gen 1), 500mA (USB 2.0) with LP4 |
| Product Color | Black |
| Form Factor | Plug-in Card |
| Height | 4.7" |
| Width | 0.7" |
| Length | 3.2" |
| Weight (Approximate) | 1.76 oz |
| Operating System Supported | Windows Vista, Windows 7, Windows 8, Windows 8.1, Windows 10, Windows 11, Windows Server 2008 R2, Windows Server 2012, Windows Server 2016, Windows Server 2019; Linux 2.6.31 to 4.11.x LTS versions only |
| Platform Supported | PC, Linux |
| Country of Origin | China |
| Warranty | StarTech.com 2-year warranty and free lifetime technical support |
Package Contents & Installation Overview
- 2 Port PCI Express PCIe SuperSpeed (5Gbps) USB 3.0 Card Adapter with UASP
- 1 x Low Profile Bracket
- 1 x SATA to LP4 Cable
- 1 x Driver CD
- 1 x Instruction Manual
Installation involves inserting the card into an available PCI Express x1 slot, optionally connecting the LP4 power cable to the system power supply, and installing drivers from the included CD. Pro tip: Ensure your motherboard BIOS supports PCIe devices and update chipset drivers for optimal compatibility.
Why Choose StarTech.com PEXUSB3S25
Enhance USB connectivity with proven UASP performance, versatile power options, and broad OS support. Test results from Intel Ivy Bridge system, StarTech.com USB 3.2 Gen 1 cards, UASP-enabled enclosure, and SATA III SSD confirm superior speeds and efficiency. Ideal for PCI Express-enabled systems needing high-speed USB expansion.
Add SuperSpeed USB 3.0 ports to your PC—Order the StarTech.com PEXUSB3S25 today!
Type: USB Adapter
MPN: PEXUSB3S25
Compatible Brand: StarTech.com
Country of Origin: China
Manufacturer Warranty: 2 Years
Compatible Port: PCI Express x1
External Interfaces: USB 3.0
Number of Ports: 2 Ports
Model: PEXUSB3S25
Item Height: 4.7"
Item Length: 3.2"
Item Width: 0.7"
Brand: Does not apply
UPC: 065030854603
