4-Port PCI Express USB 3.0 Card

Add four USB 3.0 ports – three external ports and one internal port – to your computer

Product ID: PEXUSB3S42

3 stars (2 reviews) |
  • Expands your computer connectivity with four extra USB 3.0 ports (3 external, 1 internal)
  • Easy to install with native OS support in Windows 8.1, 8, 7, and Linux kernel 2.6.31 or later
  • Fits standard or small form-factor computers, low-profile bracket included
Your price
$45.99USD

In stock: US: 145 | CA: 15

Where to buy StarTech.com products
Where to buy

Here’s a cost-effective solution for adding USB 3.0 connectivity to your computer. This 4-port PCIe USB 3.0 card gives you three external ports and one internal port, for the ultimate connection flexibility.

Enjoy convenient USB 3.0 port availability

With three external USB 3.0 ports you can connect more devices to your computer. The card provides easy access to commonly-used peripherals such as your tablet and external hard drive. It also features an internal USB port that lets you connect a device such as a flash drive inside your computer case, providing added security and convenience.

USB 3.0 gives you fast access to your files with data transfer rates up to 5 Gbps. Plus it's backward compatible with USB 2.0 and 1.x devices, which eliminates the cost and aggravation of upgrading your existing devices.

Get up and running quickly

Setup is a breeze with native operating system support. The USB 3.0 adapter card automatically installs in Windows® 8.1, 8 and 7.

For convenient installation, this PCI Express USB 3.0 card features a dual-profile design that can be installed in almost any type of computer. It comes equipped with a standard profile bracket and also includes a low-profile bracket for installation in small form-factor/half-height systems.

UASP support for more efficient data transfers

This high-performance USB 3.0 card is enhanced with UASP support, which can perform ~70% faster read speed and ~40% faster write speed over traditional USB 3.0, when paired with UASP-enabled enclosure.

UASP speed benefit diagram

The PEXUSB3S42 is backed by a StarTech.com 2-year warranty and free lifetime technical support.

Note: UASP (USB Attached SCSI Protocol) is supported in Windows 8.1, 8, Server 2012 and Linux kernel 2.6.37 or later. 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.

Applications

  • Enhance the connection capabilities of your PCI Express enabled computer or server
  • Connect external hard drives, tablets, smartphones, CD/DVD drives, webcams or game controllers to your computer
  • Connect your flash drive or other devices to the internal USB 3.0 port for a secure connection

Partner Numbers

  • Tech Data 11719576
  • Ingram Micro USA ZQ0763
  • ASI 169394
  • D&H PEXUSB3S42
  • SYNNEX US STA-PEXUSB3S42
  • UPC 065030860321

Compatibility

  • Windows 8 logo
  • Windows 10 logo
  • Windows Server 2012 logo
  • Linux logo
  • Windows Server 2016 logo
  • Windows Server 2019 logo
Windows® XP, Vista, 7, 8, 8.1, 10
Windows Server® 2008 R2, 2012, 2012 R2, 2016, 2019
Linux 2.6.31 to 4.11.x LTS Versions only

Specifications

Warranty Information Warranty 2 Years
Connector(s) Connector Type(s) 1 - PCI Express x1
Internal Ports 1 - SATA Power (15 pin)
External Ports 3 - USB Type-A (9 pin) USB 3.0 (5 Gbps)
Internal Ports 1 - USB Type-A (9 pin) USB 3.0 (5 Gbps)
Environmental Operating Temperature 5°C to 50°C (41°F to 122°F)
Storage Temperature -20°C to 60°C (-4°F to 140°F)
Humidity 20~80% RH
Hardware Ports 4
Interface USB 3.0
Bus Type PCI Express
Card Type Standard Profile (LP bracket incl.)
Port Style Integrated on Card
Industry Standards USB 3.0 Specification Rev. 1.0
PCI Express Base Specification Rev. 2.0
Intel xHCI Specification Rev. 1.0
Chipset ID VIA/VLI - VL805
Packaging Information Package Height 1.2 in [30 mm]
Package Length 5.7 in [14.4 cm]
Shipping (Package) Weight 0.3 lb [0.1 kg]
Package Width 6.7 in [17.1 cm]
Performance Maximum Data Transfer Rate 5 Gbps
Maximum Cable Length 3000
Type and Rate USB 3.0 - 5 Gbit/s
UASP Support Yes
MTBF 24,000 hours
Physical Characteristics Weight of Product 1.9 oz [55 g]
Product Length 3.4 in [8.7 cm]
Product Width 0.7 in [19 mm]
Product Height 4.7 in [12 cm]
Software OS Compatibility Windows® XP, Vista, 7, 8, 8.1, 10
Windows Server® 2008 R2, 2012, 2012 R2, 2016, 2019
Linux 2.6.31 to 4.11.x LTS Versions only
Special Notes / Requirements System and Cable Requirements PCI Express enabled computer or server with an available PCI Express x1 slot or higher (x4, x8, x16)
SATA power connector (recommended, but optional)
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 Included in Package 1 - 4 Port PCI Express USB 3.0 Card
1 - Low-Profile Bracket
1 - Driver CD
1 - Instruction Manual

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Drivers/Downloads

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Driver(s):

Manual(s):

Datasheet

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Frequently Asked Questions

Troubleshooting

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

  1. On your keyboard, press the Windows key + X and select Control Panel.
  2. Click Hardware and Sound, then click Power Options.
  3. Click Change plan settings for the plan you want to change.
  4. Click Change advanced power settings.
  5. Click the plus sign (+) next to “USB settings” and “USB selective suspend setting” to expand the options and change the setting to Disabled.
  6. Click OK to apply the setting.

Note: You may need to disconnect and re-connect your USB device after applying these settings to re-establish the connection.

Windows 7 / Vista

  1. Click the Start button and select Control Panel.
  2. Click Hardware and Sound, then click Power Options.
  3. Click Change plan settings for the plan you want to change.
  4. Click Change advanced power settings.
  5. Click the plus sign (+) next to “USB settings” and “USB selective suspend setting” to expand the options and change the setting to Disabled.
  6. Click OK to apply the setting.

Note: You may need to disconnect and re-connect your USB device after applying these settings to re-establish the connection.

Windows XP

  1. On your desktop, right-click the My Computer icon and select Properties.
  2. Click the Device Manager tab.
  3. Expand Universal Serial Bus controllers by clicking the arrow to the left of it.
  4. Right-click the first USB Root Hub device and select Properties.
  5. Click the Power Management tab.
  6. Clear the box next to Allow the computer to turn off this device to save power.
  7. Click OK to apply the setting.
  8. Repeat steps 4-7 for any remaining devices in the Universal Serial Bus Controllers section with “Root Hub” in the name.

Note: You may need to disconnect and re-connect your USB device after applying these settings to re-establish the connection.

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 cables

  • USB devices

  • 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:

Installation

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:

  1. Download the latest drivers from the StarTech.com website (http://www.startech.com/Support). You can find the part number and product ID on the product’s packaging.

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).

  1. Once the download is complete, right-click the zip folder that you downloaded, select Extract All, and follow the on-screen instructions.
  2. In the list of extracted files, right-click the VIA_XHCI_Driver_V4.50A_AP.exe file and select Run as Administrator.

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.

  1. Follow the on-screen prompts to install the device drivers and restart the computer when prompted.
  2. Your computer will automatically complete the driver installation and your device should be ready to use.

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:

  1. Download the latest drivers from the StarTech.com website (http://www.startech.com/Support). You can find the part number and product ID on the product’s packaging.

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).

  1. Once the download is complete, right-click the zip folder that you downloaded, select Extract All, and follow the on-screen instructions.
  2. In the list of extracted files, double-click the VIA_XHCI_Driver_V4.50A_AP.exe file.
  3. Follow the on-screen prompts to install the device drivers and restart the computer when prompted.
  4. Your computer will automatically complete the driver installation and your device should be ready to use.

Compliance and safety

Compliance letters

Safety Measures

  • If product has an exposed circuit board, do not touch the product under power.
  • If Class 1 Laser Product. Laser radiation is present when the system is open.
  • Wiring terminations should not be made with the product and/or electric lines under power.
  • Product installation and/or mounting should be completed by a certified professional as per the local safety and building code guidelines.
  • Cables (including power and charging cables) should be placed and routed to avoid creating electric, tripping or safety hazards.
*Product appearance and specifications are subject to change without notice.

Customer Reviews

(2 reviews)
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(1 Stars)

Great feature if I can get it to work

By: Pierre - 03/19/2017
I wanted to add USB 3 to my HP Z800 with Win 7 Pro 64 bit but it is not working correctly. Confused as it should straight out of the box.
| Helpful?
Barry, Customer Support on 3/22/2017 11:44:22 AM
Hello Pierre, Thanks for sharing this with us. Hopefully, we can help. With Windows 7, you will want to download and install the latest drivers from our website. We have a very helpful FAQ which can walk you through the entire process from start to finish. https://www.startech.com/faq/vli_usb_3_install_windows_v7810#PEXUSB3S42 Please reach out to our support team if you require any assistance. Thanks
(5 Stars)

Has been working great for 2 years.

By: Mathew - 01/21/2019
Bought 2 years ago for my home built - Windows 10 Home - computer (AMD FX CPU/Gigabyte MB), to add extra USB ports. Have had no issues thus far.
| Helpful?
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