Troubleshooting the USB3-HUB-81×7 USB 3.0 7 port Hub

Please note: This article is no longer relevant to newer versions of the USB3-HUB7-81X after mid-September 2013. For up-to-date firmware information please see here.

Most customers purchasing our black 7 port USB 3.0 hub, the USB3-HUB7-81X, shouldn’t have any problems.

In case of issues, the troubleshooting steps below are likely to provide a quick resolution. If you run into questions or find that these steps aren’t helping, please comment on this post or send an email to and we’ll be happy to help! Attaching the output from our support tool, PlugDebug, generated while the hub is connected and powered up will also help us recommend the right steps. Instructions to download and use PlugDebug are here:

Following these steps in order is recommended:

  1. Verify that the hub is operating in “Self-Powered” mode.
  2. Update Host PC USB 3.0 Controller software.
  3. Update hub firmware.
  4. Update/Install device-specific drivers or firmware.

Ensure the hub operates in “Self-Powered” Mode

When connecting the hub to the PC, it is important to connect the AC power supply to the hub 1st, and then connect USB from the hub to the host PC. If the hub is connected to the PC before power is, devices may not be recognized properly. To ensure that the hub is operating in self powered mode:

  1. Verify that the Green power LED on the AC power supply or “power brick” is solid, with no flashing or blinking, and that the connection to the hub is secure.
  2. After verifying normal operation of the power supply, unplug the USB connection from the back of the hub, wait 10 seconds, and reconnect it.
  3. Test whether devices work normally first in ports 5-7, and then in ports 1-4.

Check host PC for USB 3.0 host controller software updates

Various issues with detecting devices connected to USB 3.0 SuperSpeed hubs may be caused by using older USB 3.0 Host controller drivers.  Generally speaking, drivers from mid 2012 or later tend to work relatively well, when compared to early USB 3.0 host controller drivers released in 2010, 2011, or early 2012.

For Windows 8, simply apply any available Windows Updates. Microsoft provides USB 3.0 host controller drivers for Windows 8 PC’s.

For Windows 7, Windows Vista, or Windows XP, most USB 3.0 host controllers on recent (from mid-2012 onward) software versions work well with currently shipping versions of our hub, as these older Windows versions all used USB 3.0 host controller drivers provided by the respective host controller chip  makers. It is not unusual for customers to need an update to a host PC’s usb 3.0 controller software for normal operation of the hub (since a hub’s drivers are actually loaded from the USB host controller the hub is attached to). Checking your PC manufacturer’s support page is a good first resource for finding USB 3 Host controller driver updates.

For example, one controller we’ve verified that updating driver version resolves several issues with is the NEC/Renesas USB 3.0 host controller used in our PCIe USB 3.0 expansion card. Details on how to check which version of the NEC/Renesas controller chip your system are here.

For assistance determining whether a USB 3.0 host controller driver update is available for your PC, please email with your Amazon Order ID, a note explaining why you are emailing us, and the output from our support tool PlugDebug.

Please do NOT email your support file with no description of what issue you are facing. Only by knowing both what specific troubles your system is having and the details of the system provided by PlugDebug are we able to recommend the right steps for troubleshooting.

Mac OS X

On OS X, simply apply any available App store updates.

For issues specific to ports 1-4, apply firmware version 8581

Plugable’s USB 3.0 7 port Hub is internally comprised of dual VL812 4 port hub chips. A 2nd “downstream” chip is connected to the first port on the “upstream” chip, leaving 7 ports available for connecting external devices (one of the 8 total ports is used connecting the downstream chip to the upstream one).
USB3HUB81x7Internals (3)
For this reason, it is crucial to first use ports 5-7 when troubleshooting issues with the 7 port hub. After verifying whether ports 5-7 work normally, making certain ports 1-4 behave normally is much easier.

For hubs running firmware version 8571, some computers may have issues recognizing devices connected to ports 1-4, or with devices connected to these ports not resuming from sleep properly. If you find issues where devices work in ports 5-7, but not in ports 1-4, updating hub firmware to version 8581 should help.

We’ve tested this firmware update utility on 32 and 64 bit Windows 7, 64 bit Windows 8, as well as 32 bit Windows XP with good results. We were also able to successfully update the firmware on a hub running Windows 7×64 in BootCamp (Parallels and other virtual machines, however, will not work).

If you do not have access to a Windows PC with USB 3.0 support (or a BootCamp partition on your USB 3.0 capable Mac) please contact for assistance. To be clear, updating over USB 2.0 connections or from OS X is not supported: only when the hub is detected as a USB 3.0 device on Windows will firmware upgrade be possible. OS X users can find further details on support options and recommended alternatives for this unit at our page on USB 3.0 Hub Support for OS X.

To update hub firmware to version 8581, use the link below to download the update utility, double-click the file, and follow the instructions onscreen.  For further instructions on this update process, or for questions on older units, details are available in the Plugable USB 3.0 Hub Firmware Upgrades post.

VL812 Firmware Update 8581

Other issues with specific devices

If none of the above steps have resolved issues with a specific device connecting through your hub, please send a mail to and attach the ouptut from our support tool, PlugDebug,  and include your Amazon order ID along with any available details about the device such as manufacturer, model number, and a description of the issue for further troubleshooting assistance. Again, please do NOT email your support file with no description of what issue you are seeing. Only by knowing both what specific issue your system is having and the system details provided by PlugDebug are we able to recommend the right steps for troubleshooting.

One common example is that many USB 3.0 external hard drives and enclosures have firmware updates that resolve issues with detection, wake from sleep, and may optimize transfer speeds to the drive. If you find a particular device operates normally when connected directly to your pc, and the previous steps haven’t resolved issues with a specific device, checking for software or firmware updates such as those below from your devices’ manufacturer is recommended:

Western Digital USB 3.0 External Updates

Seagate External Hard Drive Software Update finder

10 comments on “Troubleshooting the USB3-HUB-81×7 USB 3.0 7 port Hub”

  1. Midnight Reply

    Firmware version 8581will Not install! Getting errors, so I gave up!
    Windows 8, 64bit. Not that I’m experiencing any problems with my 7 port USB 3.0 Hub, but I like to keep everything up to date!

  2. Jeff Everett Reply

    Hi Midnight-

    If you can share some details about the errors you’re seeing we’ll be happy to help try and address them.

    For Windows 8 users, you may find that having a USB 3.0 device connected to one of the downstream ports helps when the update utility doesn’t detect or isn’t able to update the hub.

    Hope this helps, but let us know what the errors are if not and we can look into other options.



  3. Daniel Gruhl Reply

    I am having failures on a Windows 7 with message HUBIspToolEndUser64.exe has stopped working. What information would you like for debugging?

    • Jeff Everett Reply

      Hi Daniel-

      Thanks for asking, and sorry to hear about the issue! The first thing that comes to mind here would be to simply try downloading the firmware update utility again, and see if that helps.

      If not, please email the output from the PlugDebug support tool along with your Amazon order ID and the serial number from the device to With these details we’ll be able to recommend the next steps.

      PlugDebug instructions and download link are here:

      Best wishes-

      Jeff Everett
      Plugable Technologies

  4. Mike Reply

    I am trying to debug a 7 port 812 hub.
    I am having random results with my drives being recognized and am wondering if it is a firmware issue or a power issue.
    I am trying to run 4 WD external hard drives(3 usb 3.0 and 1 usb 2.0). All 4 drives are powered via USB.
    I also have a Mimo 710 plugged into the hub.
    I am wondering if I am simply trying to draw too much power and if so what would you suggest? Maybe daisy chain a couple 4 port hubs instead?

    Would simply upgrading to the USB3-HUB7A USB 3.0 SuperSpeed 7 Port Hub in Brushed Aluminum (VIA VL812 chip) solve the issue?

    I am running this on a mac pro retina.


    • Jeff Everett Reply

      Hi Mike-

      Thanks for posting with your question!

      There is a good chance this is a power issue, however it could also be firmware related. The best way to test for whether an issue is power related is to try adding one device at a time, and see if there is some threshold where adding another device starts causing problems.

      The output from our support tool, PlugDebug (specifically, so I can check what firmware is on your hub), would be necessary for me to advise on whether these issues are likely to be firmware related and thus whether the Aluminum hub is likely to help (both units use the same power supply, so if it is power related it would definitely NOT help). If you can please mail this to I’ll be happy to review and advise.

      Best wishes-

      Jeff Everett
      Plugable Technologies

  5. Ahsan Iqbal Reply

    is this hub compatible with any non(unplugable brand) usb 3.0 to hdmi ? i bought this hub 3.0 81x and bought fresco logic 3.0 usb to hdmi adapters. I have apparently installed the driver as well from fresco logic. now 1 of the laptops i am connecting with. it tells me that i have 6 display connected but it does not support more than 2 hardly since it is not having usb 3.0 but if i connect to laptop having 3.0. It simply just reads it as some device trying to charge some device. so i am wondering why i am not able to connect. Do i need to buy only plugable usb to hdmi adapters or usb to vga adapters to work with this hub?

    • Joshua Henry Reply

      Thanks for asking! Non-DisplayLink based USB graphics solutions like Fresco Logic (commonly found in less expensive, generic adapters) are not fully compatible with VIA based hubs like ours. Based on your issue, I suspect this is what is happening. I would recommend looking into some DisplayLink based adapters like ours (though it doesn’t have to be ours).

  6. Roberto Argueta Reply

    Buenas tardes consulto si puedo conectar dos USB3-HUB7-81X padra tener mayor cantidad de puertos, gracias

    • Marc M. Reply


      Muchas gracias por contactarnos, estaría más que feliz de responder a su pregunta. Es posible “Encadenar” los dos hubs juntos, para conectar múltiples dispositivos a través del mismo puerto. Para hacerlo, deberá conectar 1 de los concentradores directamente al sistema, y ​​luego conectar el otro concentrador al último puerto en el lado derecho del primer concentrador. Esto le permitirá conectar dispositivos a ambos concentradores correctamente. Espero que esta información le ayude, hágamelo saber si tiene alguna pregunta o inquietud adicional, y me complacerá mucho poder ayudarlo.

      Gracias por su paciencia,
      Propietario del producto y soporte técnico

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