If you're having problems with USB ports, read on...

[Rowens]

My front USB? ports and internal Addonics card reader on a K8N Neo Platinum have never worked but I haven't had the time to troubleshoot the problem. I saw this thread Friday and pulled the USBOC wire on Saturday. Everything is now working. Cool!

 

[Frankenputer]

Glad it's working for you now.

 

[duvallite]

This is a good thread, but the USBOC fix did not work for me.? I recently discovered that the front USB ports on my Antec Plus660AMG case would not work with USB2.0, even though the USB headers on my 865PE board worked fine.? Even after making sure that nothing was connected to pin 10 (USBOC), it still would not work, I just kept getting the "unrecognized device" message whenever I tried to plug in my jump drives .? After searching several forums, it turns out that the PCB that Antec uses in my case for the USB front ports could only handle USB1.1, and not the 2.0 version.? I made a quick call to Antec customer support to verify this, which they did, and they sent me a new PCB at no charge that they said would work with 2.0 devices.? Three days later I got it in the mail, hooked it up. and it works fine now? :smile:.? Both PCBs were visually identical, but obviously different in some way.? So, if the USBOC fix doesn't work for you, and you have an Antec case, this may be another option for you to try.?

 

[Frankenputer]

Good for you. I've found Antec's customer support to be very good. They were very responsive to me.

 

[folken]

ok i have a k7n2 delta mobo.  i have the usb problem in both front and back of my pc. i get the error with my hp scanjet 3970 scanner.  i read in the hp website that nfoce chipsets arnt compatible with with the 3000 modle series scanners.  ok i notice the pic about taking out the usboc wire. the pin definition chart is the same as my manuel but the plug is not the same as mine in my mobo.  where u take the plug part out of pin 10 it says in the side of it GND instead of usboc. anyway i took it off pin 10 so nothing is there and i still get the problem. can soemone please point me in the right direction.

 

[Stu]

what error do you get? the scanjet 3970 will still work with USB 1.1, i know cos i tested one at work on my PII test rig, which only has USB 1.1

 

[folken]

the error i get is when i plug in the usb is Unknown Device and the in a box it says this device (usb) has malfucntioned or no longer works or something like that.

 

[Stu]

ok, so have you tried the scanner in another machine? do any other USB devices work ok in the same port?

 

[folken]

the scanner works ..it stop wroking when i got this new mobo. it work before with an Asus mobo.  yes other devices work in the same port and i have tried it in all the ports.

 

[Fredrik]

It sounds odd it would work on an Asus but not on MSI. Are there any other differences? Like, even more USB devices, USB hubs, etc? There is a 500mA limit for USB devices. You can sum your USB devices up somewhere in XP I believe.

 

[osnavi]

GC61: A bit off: Do you like this Forum ? If you do, read the post on first page in this Forum " Forum Team on Strike...". If you want this Forum to stay as it is now, please send a mail to MSI. Address is mentioned in first post.

 

[ian75]

Thank you thank you thank you!!!
This thread saved my computer's life (FROM ME!) lol
Very helpful & appreciated.

 

[Frankenputer]

We're glad you found this helpful. That's why I love this forum--it's a great user-to-user group.

 

[CSETC]

THANK YOU

I have a 915P Neo2 Platinum with an Antec case and the front ports would not work with USB2.? The system would lock up.

Removed the connection to pin 10.

You made my day!!!!!!!

 

[Stu]

another satisfied customer!

 

[wpr]

Hi,

Just want to add that this program available at microsoft's web site is useful for finding problems:

http://www.microsoft.com/whdc/device/stream/vidcap/UVCview.mspx

In the past it was called USBView.

Note as well that the new usb internal cables do not have a double ground but they really support the overcurrent feature. This is only to prevent that your usb device burns.
The problem is that if the overcurrent aplies, it's very likely that you will get the BSOD, if not you are luck and just the hub will stop working together with all plugged devices until u reboot.

Cheers.

 

[Maesus]

I have to popup here and revise this misleading "fix".

USBOC stands for "USB Over Current", it's not "Open Connection".

This pin is stupidly shorted to GND by the USB header cable! If this is the case, the USB header cable in fact actually "abuse" this pin by shorting it to GND. This virtually ENABLE the over-current protection at all time, definitely your USB port won't work!!!

Anyway, this is solely depending on the USB header cable you use whether can it support this feature or not. If not, you really have to do surgery and cut this wire off.

 

[Frankenputer]

Yes, Maesus, you are absolutely correct that it is an means "over current."? This has to do with whether the case is made to utilize it as over current or it uses it as a ground. In my particular enclosure, Antec SX835II, it is set up to use the #10 pin, 9th wire as a ground.

The Antec USB connector follows the Intel standard layout. Majority of the motherboards follow the same standard as well. Intel Standard 10pin Layout
Pin 1 = Power Pin 2 = Power
Pin 3 = Data - Pin 4 = Data -
Pin 5 = Data + Pin 6 = Data +
Pin 7 = Ground Pin 8 = Ground
Pin 9 = Key or Blocked pin Pin 10 = Ground


Warning: If your motherboard contains a USB pin labeled OC or NC, make sure that no wire goes to it. You can lift the black tab and pull the wire out or simply clip the wire going to it. The pin for it is usually in pin 10. When a wire is connected to OC or NC, all the USB ports can stop working, the system can automatically shut down, or the secondary IDE is disabled.

 

[ComputerTime]

Hi,

  I am very confused now. I have 2 USB 2.0 device, 1 USB 2.0 HUB (4 ports) and 1 USB 2.0 Card reader. When I connect the USB Card Reader to any of the 8 port available (I am using 865PE Neo2 Series Mobo), XP did not complaint any error. I believed that it is able to communicate at 2.0 speed.

  However, when I connect my USB Hub to my PC, XP will complaint that the USB device can perform faster if it is being connect to a Hi-speed USB 2.0 port. When I click on the bubble, the dialog box will display that all the ports are unused, which is not correct, as I have at least 1 port in use, i.e. my USB Modem. To add further confusion, when I connect my USB 2.0 Card reader to this USB HUB, the XP will also give the same message.

    So, I don't know where the problem actually lies, is it the hardware or the software? Do note that I have removed PIN 10, and I still encounter the above messages.

    I tried to use the UVCView to see what is the configuration. How do I interpret the information? Is there anyway of telling whether the USB device is 2.0 or 1.0, and at what speed is the device communicating with the PC?

  Thanks in advance.

 

[Stu]

you can see what your USB devices are connected to in Device Manager

in Tools menu, select View devices by connection. click through ACPI Computer (or whatever type yours shows as), to PCI Bus, then expand the Standard and Enhanced Host Controllers, you can see which devices are connected to which hubs. USB 2.0 devices should show under the Enhanced Controller


another thing to try is to reinstall your USB controller drivers, especially if you've just done an upgrade of Windows

go to Device Manager, then find the Standard and Enhanced Open Host Controllers, right-click and Uninstall. then if you right-click elsewhere in Device Manager and select 'Scan for hardware changes', Windows will detect your USB controllers and then reinstall the drivers for them