Product ID: PEXUSB3S2
The PEXUSB3S2 PCI Express USB 3.0 card lets you add two USB 3.0 ports to your PC through a PCI Express slot.
Featuring a native NEC PCI Express host controller chipset, the USB 3.0 standard supports transfer rates of up to 5Gbps, while still providing backward compatibility for older USB 2.0 (480Mbps) and 1.1 (12Mbps) devices.
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.
In addition to providing a much faster transfer rate the PEXUSB3S2 USB 3.0 card also supplies 900mA of power per USB port, allowing more and more external devices to operate without the need of an additional power source.
Backed by a StarTech.com lifetime warranty and free lifetime technical support.
UASP is supported in Windows® 8 and Server 2012. 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)||1 - Connector Type(s)||PCI Express x1|
|1 - Internal Ports||LP4 (4 pin; Large Drive Power)|
|2 - External Ports||USB Type-A (9 pin) USB 3.0 (5 Gbps)|
|Environmental||Operating Temperature||-0°C to 50°C (32°F to 122°F)|
|Storage Temperature||-20°C to 60°C (-4°F to 140°F)|
|Bus Type||PCI Express|
|Card Type||Standard Profile (LP bracket incl.)|
|Chipset ID||Renesas/NEC - µPD720200|
|Packaging Information||Package Length||16.8 cm [6.6 in]|
|Package Width||25 mm [1.0 in]|
|Package Height||14.3 cm [5.6 in]|
|Shipping (Package) Weight||140 g [4.9 oz]|
|Performance||Type and Rate||USB 3.0 - 5 Gbit/s|
|Physical Characteristics||Product Length||12.1 cm [4.8 in]|
|Product Width||76 mm [3.0 in]|
|Product Height||19 mm [0.7 in]|
|Weight of Product||60 g [2.1 oz]|
|Software||OS Compatibility||Windows XP(32/64-bit)/ Server 2003(32/64-bit)/ Server 2008 R2/ Vista(32/64-bit)/ 7(32/64-bit)/ 8(32/64-bit)|
|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.|
|What's in the Box||1 - Included in Package||PCI Express USB 3.0 Card|
|LP4 Molex to SATA Adapter|
|Low Profile bracket|
Connect to your external devices and transfer data at 10x the speed of USB 2.0
In stock: 12
Prior to installing this device, ensure that your operating system is up to date (for example, you have installed the most recent service pack).
To install the driver:
Note: Windows will typically save the files to the Downloads folder that is associated with your user account (for example, C:\Users\your_name\Downloads).
Note: If the Run as Administrator option is not available, you might be attempting to run the installer from within the zipped file. Extract the files using the instructions in Step 2.
To install the driver:
Note: Windows will typically save the files to the Downloads folder that is associated with your user account (for example, C:\Documents and Settings\your_name\My Documents\Downloads).
If the USB device does not work after your computer has been in extended hibernation, it is likely that Windows has automatically turned off the USB Root hub to save power.
The steps below outline how to configure the USB root hub to stay on during hibernation, to prevent this from happening.
Windows 10 / 8
Windows 7 / Vista
When you troubleshoot issues with a USB controller card, there are some quick tests that you can complete to rule out potential problems. You can test to make sure that the following components are working correctly and are not the source of the issue:
USB controller card
To test your setup components, try the following:
Use the USB cable, device, and controller card in another setup to see if the problem is with the components or the setup.
Use a different USB cable, device, and controller card in your setup to see if the problem persists. Ideally, you should test a component that you know works in another setup.
When you test your cables, it is recommended that you do the following:
Test each cable individually.
Use short cables when you are testing.
When you test the USB device and controller card, it is recommended that you do the following:
Press the Windows key + R, type devmgmt.msc, and press Enter to open Device Manager. Check to see if your device is listed under Universal Serial Bus controllers.
If you do not see the USB controller card listed in Device Manager please see this FAQ: https://www.startech.com/support/faqs/technical-support?topic=expansion-cards#pci-pcie-cannot-boot-os-or-detect-windows.
If the device is listed with an error, follow the instructions on the website to reinstall the drivers.
To confirm that Windows detects your expansion card, complete the following:
Your expansion card is listed according to the name of the chipset. To determine the name of the chipset of your expansion card, navigate to www.StarTech.com and look on the Technical Specifications tab for your product.
The USB expansion cards derive power from the PCI or PCI Express slot on the motherboard. When high-powered USB devices are connected to the USB expansion card, the power provided by the slot may not be enough to power all of the devices and you should connect additional sources of power. When you troubleshoot issues, you should connect an additional source of power.
Symptoms that you are experiencing power-related issues include certain devices not working correctly, not all of the devices working at the same time, and certain devices not working at all.
Examples of low-powered USB devices include USB mice, keyboards, and flash drives. An example of a high-powered USB device is an external hard drive that does not have an external source of power.
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