The PEXUSB3S24 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 SATA 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(R) 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(R) Ivy Bridge system, StarTech.com add-on USB 3.0 cards, a UASP-enabled StarTech.com enclosure, and a SATA III solid state drive.
Connector(s) Connector Type(s) PCI Express x1 Male External Ports USB Type-A (9 pin) USB 3.0 Female Internal Ports SATA Power (15 pin) Plug Environmental Humidity 20-80% RH Operating Temperature 5?C to 50?C (41?F to 122?F) Storage Temperature -25?C to 70?C (-13?F to 158?F) Hardware Bus Type PCI Express Card Type Standard Profile (LP bracket incl.) Chipset ID Renesas / NEC - ?PD720202 Industry Standards USB 3.0 Specification Rev. 1.0
PCI Express Base Specification Rev. 2.0
Intel xHCI Specification Rev. 1.0 Interface USB 3.0 Port Style Integrated on Card Ports 2 Packaging Information Shipping (Package) Weight 130 g [4.6 oz] Performance Maximum Cable Length 3 m [9.8 ft] Maximum Data Transfer Rate 5 Gbps Type and Rate USB 3.0 - 5 Gbit/s UASP Support Yes Physical Characteristics Product Height 120 mm [4.7 in] Product Length 65 mm [2.6 in] Product Weight 40 g [1.4 oz] Product Width 18 mm [0.7 in] Software OS Compatibility Windows? Vista, 7, 8, 8.1, 10
Windows Server? 2008 R2, 2012, 2012 R2, 2016
Linux 2.6.31 to 4.4.x LTS versions only Special Notes / Requirements Note The maximum throughput of this card is limited by the bus interface. If used with PCI Express Gen 1.0 enabled computers, the max throughput is 2.5 Gbps. If used with PCI Express Gen 2.0 enabled computers, the max throughput is 5 Gbps. System and Cable Requirements Available PCI Express slot What's in the Box Included in Package Driver CD Instruction Manual Low Profile Bracket PCI Express USB 3.0 Card