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StarTech.com 2 Port PCI Express (PCIe) SuperSpeed USB 3.0 Card Adapter with UASP - LP4 Power

PCI Express x1 - Plug-in Card - 2 USB Port(s) - 2 USB 3.0 Port(s)

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Web ID: 1026156015
Mfr. Part: PEXUSB3S25
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 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.

Backed by a StarTech.com 2-year 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, StarTech.com add-on USB 3.0 cards, a UASP-enabled StarTech.com enclosure, and a SATA III solid state drive.

Best selling usb/firewire adapters ranking1ATEN US221A 2-port USB Switch$41.492StarTech.com Mountable 4 Port Rugged Industrial SuperSpeed USB 3.0 Hub ST4300USBM$114.993Tripp Lite 10-Port USB 2.0 Hi-Speed Hub U223-010$54.884StarTech.com 2 Port PCI Express (PCIe) SuperSpeed USB 3.0 Card Adapter with UASP PEXUSB3S25$49.475D-Link DUB-1341 Super Speed USB 3.0 Hub$37.02

Overview
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General Information
Manufacturer:
StarTech.com
Manufacturer Part Number:
PEXUSB3S25
Manufacturer Website Address:
http://www.startech.com
Brand Name:
StarTech.com
Product Name:
2 Port PCI Express (PCIe) SuperSpeed USB 3.0 Card Adapter with UASP - LP4 Power
Packaged Quantity:
1
Product Type:
USB Adapter
Technical Information
Host Interface:
PCI Express x1
Interfaces/Ports
Total Number of USB Ports:
2
Number of USB 3.0 Ports:
2
Physical Characteristics
Form Factor:
Plug-in Card
Height:
4.76" (121 mm)
Height
4.8"
Width:
0.7"
Width
0.75" (19 mm)
Length:
2.6"
Length
2.64" (67 mm)
Weight (Approximate):
3.17 oz
Weight (Approximate)
90 g
Miscellaneous
Platform Supported:
PC
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