2 Port PCI Express (PCIe) SuperSpeed USB 3.0 Card Adapter with UASP - LP4 Power
Add 2 SuperSpeed USB 3.0 ports to your PCI Express-enabled PC
Provides two external USB 3.0 ports with UASP support
Supports data rates up to 5 Gbps
Compliant with PCI Express 2.0 specifications
Optional LP4 power connector provides up to 900mA per USB port
Supports USB Battery Charging Specification 1.2
Fully compliant with USB 3.0 rev 1.0 and Intel xHCI rev 1.0 specifications
Backward compatible with USB 2.0 and USB 1.0/1.1 devices
Includes a Low-Profile/half-height installation bracket
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.
The StarTech.com Advantage
Increase efficiency of your USB 3.0 devices with up to 5 Gbps of bandwidth
Fits into full or low-profile/small form factor (SFF) systems, with a dual profile design
Power high-powered USB devices as necessary, with the optional LP4 power connector
Upgrade an older PCIe-based system from USB 2.0 to USB 3.0 connectivity
Expand the USB capabilities of your system with two additional external ports
Connect additional external hard drives, CD/DVD drives, MP3 players, printers, scanners, webcams, game controllers, digital cameras, etc. to a computer system
Connector Type(s)PCI Express x1 Male External PortsUSB Type-A (9 pin) USB 3.0 Female Internal PortsLP4 (4 pin; Large Drive Power) Male Humidity5~85% RH Operating Temperature0°C to 50°C (32°F to 122°F) Storage Temperature-20°C to 60°C (-4°F to 140°F) Bus TypePCI Express Card TypeStandard Profile (LP bracket incl.) Chipset IDRenesas/NEC - µPD720202 Industry StandardsUSB 3.0 Specification Rev. 1.0Industry StandardsUSB Battery Charging Specification Rev. 1.2Industry StandardsPCI Express Base Specification Rev. 2.0Industry StandardsIntel xHCI Specification Rev. 1.0 InterfaceUSB 3.0 Port StyleIntegrated on Card Ports2 Package Height30 mm [1.2 in] Package Length17.1 cm [6.7 in] Package Width14.3 cm [5.6 in] Shipping (Package) Weight154 g [5.4 oz] Maximum Cable Length3 m [9.8 ft] Maximum Data Transfer Rate5 Gbps Type and RateUSB 3.0 - 5 Gbit/s UASP SupportYes Product Height12 cm [4.7 in] Product Length82 mm [3.2 in] Product Width18 mm [0.7 in] Weight of Product50 g [1.8 oz] OS CompatibilityWindows® Vista, 7, 8, 8.1, 10OS CompatibilityWindows Server® 2008 R2, 2012, 2012 R2, 2016, 2019 OS CompatibilityLinux 2.6.31 to 4.11.x LTS versions only NoteDevices that do not comply with the USB Battery Charging Specification may only receive standard USB power. System and Cable RequirementsAvailable PCI Express slot Included in PackageDriver CD ''Instruction Manual ''Low Profile Bracket ''PCIe USB 3.0 Card ''SATA to LP4 Cable
| Stock code || ICxU3-ST25|
| Brand || StarTech|
| Series || USB3 PCIe|
| Model || PEXUSB3S25|
| Type || PCI-Express-x1 Card; 2x USB 3.0 Port + LP4 Power + UASP|
| UPC || 065030854603|
| ROHS || Y|
| Date added || 01/07/2014|
PEXUSB3S25 Spec Information
PEXUSB3S25 Spec Connections
|USB3||USB3 type A||External||2|
| Weight (kg) || 0.15kg|
| Weight (bare) || 50g|
| External Length (mm) || 171cm|
| External Width (mm) || 143cm|
| External Height (mm) || 30cm|
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