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  Case USB Ports Not Working 
 
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Louis Simpson Feb 06, 2010, 07:42pm EST Reply - Quote - Report Abuse
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Hi,

I recently bought a Casecom Black Midi Tower case from ebuyer, which comes with 2 front panel usb2.0 ports. This was for a new computer I had built, which is now up and running. The only problem is that I cannot get my 2 front usb ports to work. I plug flash drives and other devices into them, but they never show up on my computer.

The cable for the usb ports connected fine; straight into the motherboard. I just can't understand what may be wrong.

Any help is very much appreciated...

Thanks in advance.


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angryhippy Feb 06, 2010, 08:42pm EST Reply - Quote - Report Abuse
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>> Re: Case USB Ports Not Working
Are you sure it's plugged into the USB header on the mobo, and not the 1394 firewire header? Do you or one of your friends have a rear USB bracket you can use to hook up to the USB mobo header to see if it's the mobo headers or the actual connectors on the case that are the issue?

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john albrich Feb 07, 2010, 09:35am EST Reply - Quote - Report Abuse
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Edited: Feb 07, 2010, 10:22am EST

 
>> Re: Case USB Ports Not Working
edit to add:
If you're using the same USB device to test all the ports, then this wouldn't be an issue. But if not, then something else to check first...before doing any more hardware checking...I'm assuming your rear integrated USB ports work...as you specified only front USB ports in the problem. Verify that you have enabled BOTH USB1.x and USB2.x settings in a BIOS Settings sub-menu. They might be under a category labeled "Integrated Peripherals" or similar. This is in case for example you were trying to use 2.x devices on the front ports and only had 1.x enabled but tested with 1.x devices on the rear ports.

Actually it would help to know what motherboard you have.


If you did in fact plug the USB cable into the correct USB connector block on the motherboard, then I suggest the next thing to do is check the motherboard manual to verify if the motherboard USB connector block pins match-up with the case manufacturer's connector label assignments (e.g. polarity, signal lines vs. +5 and ground, etc). In the past I've run across several cases where the USB connector provided by the case manufacturer was not compatible with the motherboard connector block and I've had to re-wire the USB cable connector. I believe the cheaper the case, the more likely such errors. However, even the "good" case manufacturers can make a mistake on the manufacturing line or in parts ordering. If you don't already have one you can usually get a copy of the motherboard manual from the manufacturer's website.

I also suggest when doing your testing, do not plug expensive devices into any suspect USB ports. Use something relatively cheap yet still generally reliable such as a low-capacity memory stick. And if possible, while doing the debugging match the USB device to the USB port version (e.g. USB2.x to USB2.x, and USB1.x to USB1.x). Mixing USB versions adds another variable into the testing as not all USB2.x ports are compatible with all 1.x devices and vice-versa.

Other potential causes can include mislabeled connectors or you've incorrectly plugged-in the connector(s) (e.g. connector offset from the pins, wrong wire connected to the wrong pin, etc). I've seen instances where both of these have happened whether each wire has an individual connector or the wires are grouped into a multi-pin connector. Manufacturing errors do occur and even experienced users make mistakes.


edit to add:
apologies for the multiple edits. I take meds for pain and at the moment also very sleep deprived.

Louis Simpson Feb 07, 2010, 11:26am EST Reply - Quote - Report Abuse
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Edited: Feb 07, 2010, 11:33am EST

 
>> Re: Case USB Ports Not Working
Thanks for all the replies. I will definitely take these into consideration, and give them a try.
I remember reading through the mobo manual, and making the USB block connection to where it was specified. But I think it may be more than that...
The rear USB ports work just fine - The ports that are intergrated onto the mobo.

This is the mobo I am using at the moment, ASUS P5Q SE PLUS iP45 Socket 775 8 channel audio ATX Motherboard.

Again, thanks for the support and I will see if any of these can solve the problem.


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