Trendnet TU3H4 USB3.0 Hub does not work in windows 8. Device manager says it is (not functional)

Method 1 - Unplug Computer So how did I finally fix the problem? Well, if you are lucky, it's a super simple solution! Try this method first and if it works, you'll have saved a lot of time.
Simply unplug your computer from the power supply. Yes that is it! Note that this does not mean just turning off your computer using the power button because most modern computers don't actually turn off completely and the motherboard will still get power. This is useful sometimes if you want to remotely wake up a computer, etc.
The motherboard is where all of hardware of the computer connects to, including the USB ports. Sometimes the motherboard needs to be "rebooted" because things can go wrong, i.e. all or some USB ports suddenly stop working. The small microprocessor on the motherboard will reload the drivers and your USB ports should hopefully be recognizing devices again.
So first turn off your computer using the Shut Down option in Windows or pressing the power button and then UNPLUG the PC from the wall outlet. Let it sit for several minutes and then plug it back in.
Method 2 - Update Device Driver If Windows is not able to recognize the device, you may also see in Device Manager that the device shows up as an "Unknown Device". You can get to Device Manager by clicking on Start and typing in devmgmt.msc or by going to Control Panel and clicking on Device Manager.
In that case, you should right-click on Unknown Device, click on Properties, then the Driver tab and then click Update Driver.

If this doesn't work, you can also try to download the driver for your device from the manufacturer's website. If the USB device is just a flash drive, then it's probably not a driver issue. However, if you are installing a USB printer, drawing pad, etc, then it might be worth downloading the driver for that specific device.

Method 3 - Restart & Disconnect USB Devices The next thing you can try is to disconnect all USB devices and then restart the machine. once you have restarted, try to connect the USB device that was causing the problem.
If that particular USB port doesn't recognize it, try another one. If the device is recognized by a different USB port, there could be a hardware problem with one of the USB ports. If no USB port recognizes the device, then keep reading because it's probably something else.

Method 4 - USB Root Hub Another thing you can try is to open Device Manager, expand USB Serial Bus Controllers, right-click on USB Root Hub and then click on Properties.
Click on the Power Management tab and uncheck the Allow the computer to turn off this device to save power box. If you have more than one USB Root Hub listed, you need to repeat these steps for each one.
Click OK and then restart your computer. Try to reconnect the USB device and see if it is recognized. If not, go back to the power management tab for each one and check the box again. If it does recognize the device, then leave them unchecked.

Method 5 - Connect Directly to PC A friend of mine ran into this issue and the cause ended up being his USB hub. He only had three USB ports on his computer, so he bought a hub where he could connect an additional 8 USB devices.
I guess this proved too much for his computer and it just started sporadically not recognizing various devices. After removing the hub and connecting the device directly to the computer, it worked just fine.
We haven't really been able to find any other solution to this problem other than reducing the number of items connected to the hub. Actually, one other solution worked, but it meant having to buy a new USB hub with more power.
If you are having this problem with Windows 8 or Windows 8.1, then you might be in luck. Microsoft has released a fix for Windows 8 not detecting USB devices properly. Make sure to install this hotfix if running Windows 8.
Method 6 - USB Troubleshooter If nothing has worked so far, you can download the Windows USB Troubleshooter Fixit tool. It's a free tool that works with Windows XP, Vista and 7.
You can either have the troubleshooter fix the problems for you or select the fixes yourself. I would just let it fix them for you since the choices can sometimes be confusing and technical for the novice user.
Method 7 - Update Generic USB Hub If you are getting the Unknown Device error in Device Manager, you can also try one other thing. Open Device Manager and then expand Universal Serial Bus Controllers.
You should see at least one item called Generic USB Hub. On some computers, you might see two, three or more of these. Right-click on the first one and choose Update Driver Software.
When the update dialog pops up, choose Browse my computer for driver software.
When the update dialog pops up, choose Browse my computer for driver software.

If your computer does not recognize the USB device, first try method 1 to work around this issue. Method 1: Initiate recognition of the USB device by using Device Manager To initiate recognition of the USB device by using Device Manager, follow these steps: Click Start, click Run, type Devmgmt.msc, and then click OK. The Device Manager window opens. Click to select your computer as the location for the scan. On the Action menu, click Scan for hardware changes. Windows XP recognizes the new device. Close the Device Manager window. If this method resolves the issue, you are finished. If this method does not resolve the issue, go to method 2. Method 2: Disable power management of the USB hub Note If you perform the following procedure, you may also reduce the battery life on a portable computer. Use this method if method 1 does not work. To disable power management of the USB hub, follow these steps: Click Start, click Run, type Devmgmt.msc, and then click OK. The Device Manager window opens. Expand Universal Serial Bus controllers. Right-click a USB Root Hub in the list, and then click Properties. The USB Root Hub Properties dialog box is displayed. Click the Power Management tab. Click to clear the Allow the computer to turn off this device to save power check box, and then click OK. Repeat steps 3 through 6 for each USB Root Hub in the list. On the Action menu, click Scan for hardware changes. Windows XP recognizes the new device. Close the Device Manager window. If this method does not resolve the issue, go to method 3. Method 3: Restart the computer To initiate recognition of the USB device, first unplug the USB device and restart the computer. Then, wait five to ten seconds before you plug the USB device into the computer or hub. Windows XP recognizes the new device. If this method does not resolve the issue, you might want to review the articles in the "Similar Problems and Solutions" section, or contact Support. For information about how to contact Support, visit the following Microsoft Web site: http://support.microsoft.com/contactus Back to the top ' Give Feedback

HelloI have the same problem!I have a message to the support
https://www.trendnet.com/asp/helpdesk/

Kind regards

w7

First, please disconnect all USB devices and then perform the following steps:

Click "Start" button, type "devmgmt.msc" (without quotation marks) in the "Search" bar and press "Enter". Click "Continue" if necessary.

In Device Manager, double click to expand "Universal Serial Bus controllers", right click on the Host Controller, click "Uninstall" and click "OK".

Repeat the step 2 to uninstall all items under "Universal Serial Bus controllers".

Then, restart your computer and Windows 7 will reinstall all USB controllers automatically.

All PCs provides power supply via USB port. The power is controlled by electronic circuit. Sometimes when overloaded the circuit burns out (the last controlling transistor, actually). This does not prevent the data communication, because it is separated circuit. But if the device is not powered it cannot communicate. When you plug the USB device to powered USB hub, then all go right.
Are you able to use the USB ports with other USB-powered devices like USB sticks, mouses, cameras? If not, the mentioned circuit is burned out. If they work OK, then your internal USB hub provides less power current than needed. In both cases there is nothing to do. The circuit resides on the mainboard of the laptop and replacement is expencive. Use it with that external USB hub you have.

Method 1: Initiate recognition of the USB device by using Device Manager loadTOCNode(2, 'workaround'); To initiate recognition of the USB device by using Device Manager, follow these steps:

1. Click Start, click Run, type Devmgmt.msc, and then click OK. The Device Manager window opens.
2. Click to select your computer as the location for the scan.
3. On the Action menu, click Scan for hardware changes.
   
   Windows XP recognizes the new device.
4. Close the Device Manager window.

If this method resolves the issue, you are finished.

If this method does not resolve the issue, go to method 2. Back to the top Method 2: Disable power management of the USB hub loadTOCNode(2, 'workaround'); Note If you perform the following procedure, you may also reduce the battery life on a portable computer.

Use this method if method 1 does not work. To disable power management of the USB hub, follow these steps:

1. Click Start, click Run, type Devmgmt.msc, and then click OK. The Device Manager window opens.
2. Expand Universal Serial Bus controllers.
3. Right-click a USB Root Hub in the list, and then click Properties. The USB Root Hub Properties dialog box is displayed.
4. Click the Power Management tab.
5. Click to clear the Allow the computer to turn off this device to save power check box, and then click OK.
6. Repeat steps 3 through 6 for each USB Root Hub in the list.
7. On the Action menu, click Scan for hardware changes.
   
   Windows XP recognizes the new device.
8. Close the Device Manager window.

If this method does not resolve the issue, go to method 3. Back to the top Method 3: Restart the computer loadTOCNode(2, 'workaround'); To initiate recognition of the USB device, first unplug the USB device and restart the computer. Then, wait five to ten seconds before you plug the USB device into the computer or hub. Windows XP recognizes the new device.

Hello,
Method 1: Initiate recognition of the USB device by using Device Manager loadTOCNode(2, 'workaround'); To initiate recognition of the USB device by using Device Manager, follow these steps:

1. Click Start, click Run, type Devmgmt.msc, and then click OK. The Device Manager window opens.
2. Click to select your computer as the location for the scan.
3. On the Action menu, click Scan for hardware changes.

Windows XP recognizes the new device.
4. Close the Device Manager window.

If this method resolves the issue, you are finished.

If this method does not resolve the issue, go to method 2.
Method 2: Disable power management of the USB hub loadTOCNode(2, 'workaround'); Note If you perform the following procedure, you may also reduce the battery life on a portable computer.

Use this method if method 1 does not work. To disable power management of the USB hub, follow these steps:

1. Click Start, click Run, type Devmgmt.msc, and then click OK. The Device Manager window opens.
2. Expand Universal Serial Bus controllers.
3. Right-click a USB Root Hub in the list, and then click Properties. The USB Root Hub Properties dialog box is displayed.
4. Click the Power Management tab.
5. Click to clear the Allow the computer to turn off this device to save power check box, and then click OK.
6. Repeat steps 3 through 6 for each USB Root Hub in the list.
7. On the Action menu, click Scan for hardware changes.

Windows XP recognizes the new device.
8. Close the Device Manager window.

If this method does not resolve the issue, go to method 3.

Click Start, click Run, type Devmgmt.msc, and then click OK. The Device Manager window opens.
Uninstall all the usb controller from USB controller
and now restart the computer.

If this method does not resolve the issue, go to method 4 .
Method 3: Restart the computer loadTOCNode(2, 'workaround'); To initiate recognition of the USB device, first unplug the USB device and restart the computer. Then, wait five to ten seconds before you plug the USB device into the computer or hub. Windows XP recognizes the new device.

Hope this helps.

I just had the same problem and was able to figure our a permanent fix.Judging by the date of you post, I'm guessing you've already remedied this problem one way or another. But just in case you haven't or someone else is having the same problem, I'll go ahead and post what to do. First, make sure you leave the USB hub plugged in right now so that Device Manager lists what it thinks is the Bluetooth device. Go into Control Manager > Hardware & Sound > Device Manager. Right click on Bluetooth device that is showing up in error. From the dropdown box, select Properties. Click the Driver Tab. Click Uninstall. Check "Delete the driver software for this device." Click OK. Unplug your USB hub for a few seconds, then plug it back in. Windows should now recognize it as a "Generic USB hub." You should be good to go. Just remember not to install that update again or try to update the driver for the Generic USB hub. If you do, you'll end up with the same problem. I hope this helps someone out there.

Reinstall your USB drivers:
Navigate to Device manager, find a branch named "USB Controllers" or similar
Right click the one thats the problem (or all of them if you dont know which), select Uninstall
Reboot your machine and windows will autodetect the USBs and reinstall their drivers

Check the BIOS and see if they are enabled...

Disable power management on the USB hub To preserve power, Microsoft Window XP tries to disable USB when a device is not used. Under certain circumstances this function does not work and may cause USB devices to fail to respond when called. To resolve this issue, disable power management on the USB hub by doing the following:

1. Click Start , and right-click My Computer .
2. Click Properties , then click Hardware .
3. Click Device Manager .
4. Double-click the Universal Serial Bus Controllers branch to expand it.
5. Right-click USB Root Hub , and then click Properties .
6. Click Power Management .
7. Deselect Allow the computer to turn off this device to save power .
8. Repeat Steps 5 through 7 for each USB Root Hub.
9. Click OK , and close Device Manager .