Product ID: PEXUSB3S4V
The PEXUSB3S4V PCI Express USB 3.0 Card (with SATA Power) adds 4 external USB 3.0 ports to any PCI Express-enabled computer system with support for data rates up to 5 Gbps, while remaining backward compatible with USB 2.0 / 1.x 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 External Drive Enclosures (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.
The card uses a "stacked" port layout that places the ports one on top of the other, enabling all four USB 3.0 ports to be external facing, while still allowing the card to fit into a small form factor/low profile computer system using the included low profile bracket.
Plus, with a built-in SATA power connector, each USB port can provide up to 900mA of power to devices that draw power from a host bus connection (500mA for USB 2.0) by connecting to your computer power supply.
Backed by a StarTech.com 2-year 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.
|Warranty Information||Warranty||2 Years|
|Connector(s)||1 - Connector Type(s)||PCI Express x1|
|1 - Internal Ports||SATA Power (15 pin)|
|4 - External Ports||USB Type-A (9 pin, 5 Gbps)|
|Environmental||Operating Temperature||5°C to 50°C (41°F to 122°F)|
|Storage Temperature||-25°C to 70°C (-13°F to 158°F)|
|Humidity||20% ~ 80% RH|
|Bus Type||PCI Express|
|Card Type||Standard Profile (LP bracket incl.)|
|Port Style||Integrated on Card|
|Chipset ID||Renesas/NEC - µPD720201|
|Packaging Information||Package Height||33 mm [1,3 in]|
|Package Length||13,2 cm [5,2 in]|
|Shipping (Package) Weight||138 g [4,9 oz]|
|Package Width||16,2 cm [6,4 in]|
|Performance||Type and Rate||USB 3.0 - 5 Gbit/s|
|Physical Characteristics||Weight of Product||68 g [2,4 oz]|
|Product Length||75 mm [3,0 in]|
|Product Width||19 mm [0,7 in]|
|Product Height||6,8 cm [2,7 in]|
|Software||OS Compatibility||Windows® XP, Vista, 7, 8, 8.1, 10, 11
Windows Server® 2003, 2008 R2, 2012, 2012 R2, 2016, 2019
|Special Notes / Requirements||System and Cable Requirements||Available PCI Express expansion slot|
|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|
|Low Profile Bracket|
Enable fast, swappable access to your 2.5in or 3.5in SATA hard drives, through USB 3.0
Industrial-grade | 8kV Air | 4kV Contact | Metal | Mountable | 5 Gbps
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.
You should not upgrade your device's firmware if you do not have any issues with the functionality of your device. The only time you should consider an upgrade is if you are experiencing a problem with the device, and you have confirmed that the firmware addresses this problem. You can confirm this is the case by reviewing the documentation included with the firmware or by consulting with our Technical Support team. Incorrectly upgrading firmware can result in diminished performance so it is best to contact StarTech.com if you would like to perform this operation.
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.
Check out our review guidelines.