Startech PEXUSB3S24

2 Port USB 3.0 SuperSpeed PCI Express Card with UASP and SATA Power – Internal Adapter

The 2-Port USB 3.0 PCI Express Card, model PEXUSB3S24, allows you to add two USB 3.0 ports to any available PCI Express system, with an optional SATA power connector providing up to 900 mA of power per port to devices with power supply. USB 3.0 bus (500 mA, in the case of USB 2.0).

Enhanced with support for UASP (SCSI protocol with USB connection), this USB 3.0 controller performs 70% better than conventional USB 3.0 when paired with an External Drive Enclosures (Note: UASP is not supported on all operating systems) . Since it uses a more efficient protocol than the traditional USB BOT (“Bulk-Only Transport”) protocol, UASP technology optimizes transfers by allowing multiple commands to be processed simultaneously, significantly increasing speeds. transfer for less waiting time in data transfers. For more details, see the UASP test results below.

The PCIe USB 3.0 adapter complies with USB 3.0 standards for data transfer speeds of up to 5 Gbps, as well as offering backward compatibility with existing USB 2.0 / 1.1 devices. For added versatility, this controller card is equipped with a standard profile platen and includes a low profile / half height platen that allows installation in compact size computers.

Backed by a StarTech.com 2-year warranty and free lifetime technical support.

Improved performance with UASP
UASP is compatible with Windows® 8, 8.1, Server 2012 and Linux kernel 2.6.37 or higher. In tests, UASP performed up to 70% faster read speed and 40% faster write speed, in contrast to the peak performance of conventional USB 3.0.

At the same full performance capabilities, UASP tests also showed up to an 80% reduction in required processor resources.

Test results were obtained using an Intel® Ivy Bridge system, StarTech.com USB 3.0 expansion cards, a StarTech.com box with available UASP, and a SATA III solid state drive.

Upgrading from a PCIe-based previous generation system from USB 2.0 to USB 3.0
Expand your system’s USB capabilities with two additional external ports
Allows you to connect additional external hard drives, CD / DVD drives, MP3 players, printers, scanners, webcams, game controllers, digital cameras, etc. to a computer system.

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