arTech PEXUSB3S44V User Manual

4 Port PCI Express (PCIe) SuperSpeed USB 3.0
Card Adapter w/ 4 Dedicated 5Gbps Channels ­UASP - SATA / LP4 Power

Product ID: PEXUSB3S44V

The PEXUSB3S44V 4-Port PCI Express USB 3.0 Card lets you add four, dedicated 5 Gbps USB 3.0 ports to

your PCIe x4-enabled PC. This independent port architecture improves USB 3.0 performance by

transferring data on four individual channels to your computer, giving you faster file transfers.

When multiple devices are connected, traditional single bus USB 3.0 cards share your maximum

bandwidth between all ports. By employing four host controller chipsets, each port operates on a separate

independent transmission channel. Dedicating up to 5 Gbps to each USB port reduces performance

bottlenecks, and effectively quadruples your total available to bandwidth to 20 Gbps.

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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 requires a

compatible operating system). 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.

For high-power USB devices, this PCIe USB 3.0 card includes an optional SATA or 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). The USB 3.0 card also supports USB Battery Charging Specification 1.2

(Apple Mode only), letting you charge compatible Apple devices (iPhones and iPads) faster than a

standard USB 3.0 port.

The controller card is compliant with USB 3.0 standards while offering backward compatibility with

existing USB 2.0 / 1.1 devices. For added versatility, the USB 3.0 PCIe 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.

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