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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, 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.
Connector(s) | |
Connector Type(s) | PCI Express x1 Male |
External Ports | USB Type-A (9 pin) USB 3.0 Female |
Internal Ports | LP4 (4 pin, Molex Large Drive Power) Male |
Environmental | |
Humidity | 5~85% RH |
Operating Temperature | 0?C to 50?C (32?F to 122?F) |
Storage Temperature | -20?C to 60?C (-4?F to 140?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 USB Battery Charging Specification Rev. 1.2 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 | 153 g [5.4 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 | 82 mm [3.2 in] |
Product Weight | 51 g [1.8 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 | Devices that do not comply with the USB Battery Charging Specification may only receive standard USB power. |
System and Cable Requirements | Available PCI Express slot |
What's in the Box | |
Included in Package | Driver CD |
Instruction Manual | |
Low Profile Bracket | |
PCIe USB 3.0 Card | |
SATA to LP4 Cable |
Ports & interfaces | |
Host interface Interface that enables a host controller to communicate with a driver. | PCIe |
Output interface The socket (port) where the output connectors are connected. | USB 3.2 Gen 1 (3.1 Gen 1) |
Expansion card form factor | Full-height / Low-profile |
Expansion card standard | PCIe 2.0 |
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 2 |
Design | |
Internal The product is built in. | |
Maximum cable length | 3 m |
RoHS compliance The Restriction of Hazardous Substances (RoHS) Directive aims to restrict certain dangerous substances commonly used in electrical and electronic equipment. Any RoHS compliant product is tested for the presence of Lead (Pb), Cadmium (Cd), Mercury (Hg), Hexavalent chromium (Hex-Cr), Polybrominated biphenyls (PBB), and Polybrominated diphenyl ethers (PBDE). PBB and PBDE are flame retardants used in several plastics. For Cadmium and Hexavalent chromium, there must be less than 0.01% of the substance by weight at raw homogeneous materials level. For Lead, PBB, and PBDE, there must be no more than 0.1% of the material, when calculated by weight at raw homogeneous materials. Any RoHS compliant component must have 100 ppm or less of mercury and the mercury must not have been intentionally added to the component. In the EU, some military and medical equipment are exempt from RoHS compliance. | |
Certification | CE, FCC |
Features | |
Chipset Set of electronic components in an integrated circuit that manages the data flow between the processor, memory and peripherals. It is usually found in the motherboard of a computer. Chipsets are usually designed to work with a specific family of microprocessors. Because it controls communications between the processor and external devices, the chipset plays a crucial role in determining system performance. | Renesas / NEC - µPD720202 |
Data transfer rate (max) | 5 Gbit/s |
UASP support |
Operational conditions | |
Operating temperature (T-T) The minimum and maximum temperatures at which the product can be safely operated. | 0 - 50 °C |
Storage temperature (T-T) The minimum and maximum temperatures at which the product can be safely stored. | -20 - 60 °C |
Operating relative humidity (H-H) | 5 - 85% |
System requirements | |
Windows operating systems supported Windows vesions wich can be used with the device. | Windows 10 Education,Windows 10 Education x64,Windows 10 Enterprise,Windows 10 Enterprise x64,Windows 10 Home,Windows 10 Home x64,Windows 10 IOT Core,Windows 10 Pro,Windows 10 Pro x64,Windows 10 x64,Windows 7,Windows 7 Enterprise,Windows 7 Enterprise x64,Windows 7 Home Basic,Windows 7 Home Basic x64,Windows 7 Home Premium,Windows 7 Home Premium x64,Windows 7 Professional,Windows 7 Professional x64,Windows 7 Starter,Windows 7 Starter x64,Windows 7 Ultimate,Windows 7 Ultimate x64,Windows 7 x64,Windows 8,Windows 8 Enterprise,Windows 8 Enterprise x64,Windows 8 Pro,Windows 8 Pro x64,Windows 8 x64,Windows 8.1,Windows 8.1 Enterprise,Windows 8.1 Enterprise x64,Windows 8.1 Pro,Windows 8.1 Pro x64,Windows 8.1 x64,Windows Vista,Windows Vista Business,Windows Vista Business x64,Windows Vista Enterprise,Windows Vista Enterprise x64,Windows Vista Home Basic,Windows Vista Home Basic x64,Windows Vista Home Premium,Windows Vista Home Premium x64,Windows Vista Ultimate,Windows Vista Ultimate x64,Windows Vista x64 |
Linux operating systems supported 8 RT. Linux (9.4, 9.5), Red Hat Enterprise Linux 5.0 (supported with a pre-built package); SUSE Linux (10.3, 11.0, 11, 11.1, 11.2), Fedora (9, 9.0, 10, 10.0, 11.0, 11, 12, 12.0), Ubuntu (8.04, 8.04.1, 8.04.2, 8.10, 9.04, 9.10, 10.04), Debian (5.0, 5.0.1, 5.0.2, 5.0.3) | |
Server operating systems supported | Windows Server 2003,Windows Server 2008 R2,Windows Server 2012,Windows Server 2012 R2,Windows Server 2016,Windows Server 2019 |
Weight & dimensions | |
Width The measurement or extent of something from side to side. | 18 mm |
Depth The distance from the front to the back of something. | 82 mm |
Height The measurement of the product from head to foot or from base to top. | 120 mm |
Weight Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies. | 51 g |
Packaging data | |
Cables included | SATA |
Drivers included | |
Manual | |
Package width The distance from one side of the packaging to the other. | 143 mm |
Package depth The distance from the front to the back of the packaging. | 171 mm |
Package height The distance from the top to the bottom of the packaging. | 30 mm |
Package weight Weight of the packaged product. | 154 g |
Other features | |
Package length | 6.69 |
SKU | 210861 |
MPN | PEXUSB3S25 |
Brand | Startech |
Product Condition | Brand New/Unused |
Stock Availability | Available for Shipping |
Warranty Period | 2 Years Warranty |
Warranty Contact | https://www.startech.com/ |