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USB rear ports not working fine: any advice?

Hi everyone, and thanks in advance.

This is what's happening with my iMac: the rear ports aren't readig any storage devices (pen-drives, Hard Disks, SD cards), but are working fine with my Apple keyboard and a Genius mouse.

I've been reading several posts in this site, and came to the conclusion that it must be a hardware problem. This are my questions:

- Is there a way to connect storage devices to the mac, not using firewire? (I've tryed plugging them to the keyboard, but that doesn't work)

- Is there any fix i can do? (As an electronic technician, i feel confident playing with electronic components)

- Is there a way to connect usb devices via firewire?

As a photographer, my work is suffering due to the lack of connection between my Mac and my devices, son any help is welcome!

Thanks a lot,

Agustín from Argentina (that's why my english isn't that good)

New information:

While performing the tests included in the Apple Service Diagnostic DVD i run into this in the Hardware Profile, does this mean a thing to anyone? (i'm a bit lost here):

USB Port

type: USB 2.0

location: rear-right

speed: 480

uhci-id: 0x5d100000

ehci-id: 0xfd500000

port-number: <obsolete>

is-connected: TRUE

USB Port

type: USB 2.0

location: rear-right

speed: 480

uhci-id: 0x3d100000

ehci-id: 0xfd300000

port-number: <obsolete>

is-connected: FALSE

USB Port

type: USB 2.0

location: rear-right

speed: 480

uhci-id: 0x1d100000

ehci-id: 0xfd100000

port-number: <obsolete>

is-connected: FALSE

More information:

Recently I re-installed my OS, but the problem is still here, nothing changed. Anyone still thinks this may be a software related problem? Any advice could help!

Answered! View the answer I have this problem too

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Chosen Solution

It sounds like you may not have enough voltage/current available at those outlets for what you want to hookup. I would try an inexpensive powered hub and see if that cleared my problem. I am including a link for the one I use but there are many different hubs available. Check your local computer or electronics store. Good luck.

http://eshop.macsales.com/item/Belkin/F5...

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Comments:

Thanks for your interest. For i while i thought that the problem was related to current, and tried what you told me. I plugged an external powered hard drive, that comes with a hub, but that didn't work (neither the HD nor the usb ports on it).

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Agustin will be eternally grateful.
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