Mac Pro (2006) USB 2.0 ports not working

My USB 2.0 ports are only functioning and displaying as USB 1.1. Under device manager it does not state "Enhanced", which I understand to mean that a USB 2.0 port has been detected.
I haven't seen any information here or elsewhere about this so is it just me that is experiencing this, or is there a fix that I somehow missed?
Cheers,
Akira.

Hello, @CeeeJaaay 
Welcome to the HP Forums.
I see that the USB 2.0 ports aren't working correctly, that they just stopped. I will try to assist you with this.
Start with a system restore, if anything happened to the notebook recently that may be the cause this should correct it.
If it doesn't, make sure all Windows updates have completed. Then use the HP Support assistant to update the drivers.
If they still aren't working, I'd recommend contacting phone support for repair/replacement options.
Please call our technical support at 800-474-6836. If you live outside the US/Canada Region, please click the link below to get the support number for your region. http://www8.hp.com/us/en/contact-hp/ww-phone-assist.html
Thank you for posting on the HP Forums.
I worked on behalf of HP.

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