- - Internal
- - Host interface: PCIe
- - Output interface: USB 3.2 Gen 1 (3.1 Gen 1)
- - 5 Gbit/s
StarTech.com 2 Port PCI Express (PCIe) SuperSpeed USB 3.0 Card Adapter with UASP - LP4 Power - Dual Port USB 3 PCIe Controller
Add 2 SuperSpeed USB 3.0 ports to your PCI Express-enabled PC
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 (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.
Backed by a StarTech.com 2-year warranty and free lifetime technical support.
Improved Performance with UASP
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 3.0 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, StarTech.com add-on USB 3.0 cards, a UASP-enabled StarTech.com enclosure, and a SATA III solid state drive.
The StarTech.com Advantage
- Increase efficiency of your USB 3.0 devices with up to 5 Gbps of bandwidth
- Fits into full or low-profile/small form factor (SFF) systems, with a dual profile design
- Power high-powered USB devices as necessary, with the optional LP4 power connector
StarTech.com PEXUSB3S25, PCIe, USB 3.2 Gen 1 (3.1 Gen 1), Full-height / Low-profile, PCIe 2.0, 118.1" (3 m), CE, FCC
StarTech.com PEXUSB3S25. Host interface: PCIe, Output interface: USB 3.2 Gen 1 (3.1 Gen 1), Expansion card form factor: Full-height / Low-profile. Maximum cable length: 118.1" (3 m), Certification: CE, FCC. Chipset: Renesas / NEC - µPD720202, Data transfer rate (max): 5 Gbit/s. Windows operating systems supported: Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64,..., Server operating systems supported: Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows.... Width: 0.709" (18 mm), Depth: 3.23" (82 mm), Height: 4.72" (120 mm)
I have used this USB 3.0 PCIe adapter card for a few weeks now and it does not disappoint at all. Now all I need to do is test with some motherboards that have USB 3.0 controller built-in to compare the differences. And you can bet on the fact that we... 
