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Windows 7: Using USB 2 Device With USB 1 Cable

16 Nov 2012   #1
jsquareg

Windows 7 Home Premium (Retail) Full version - With SP1
 
 
Using USB 2 Device With USB 1 Cable

I plan to replace my MB soon and the new MB will have at least USB 2 native capability. The front panel USB ports on my case are now, of course, USB 1. If I connect them to the new MB's USB headers will that offer any problems to USB 2 devices?

Thank you.


My System SpecsSystem Spec
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16 Nov 2012   #2
patio

Vista Ultimate X64/ Windows 7 Dual-boot
 
 

No...USB2 is backwards compatible so you should have no issues...
However USB2 devices will run at the lower speeds when connected to your front USB1 ports.
2 things to look into is see if any newer USB front headers will fit your case...that or add a PCI USB3 expansion card for more ports.
My System SpecsSystem Spec
16 Nov 2012   #3
jsquareg

Windows 7 Home Premium (Retail) Full version - With SP1
 
 

Quote   Quote: Originally Posted by patio View Post
No...USB2 is backwards compatible so you should have no issues...
However USB2 devices will run at the lower speeds when connected to your front USB1 ports.
2 things to look into is see if any newer USB front headers will fit your case...that or add a PCI USB3 expansion card for more ports.
Thank you very much.

That is exactly what I wanted to know. I was afraid your second comment, the one about speed, would be the case so I guess I will find a new USB front header.

Thanks again.
My System SpecsSystem Spec
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16 Nov 2012   #4
bobkn

Windows 7 Pro X64 SP1
 
 

Quote   Quote: Originally Posted by patio View Post
No...USB2 is backwards compatible so you should have no issues...
However USB2 devices will run at the lower speeds when connected to your front USB1 ports.
2 things to look into is see if any newer USB front headers will fit your case...that or add a PCI USB3 expansion card for more ports.
I don't wish to be insulting, but I don't believe this.

As far as I know, motherboard headers are the same for USB1 and USB2, and so are the cables. Same number of conductors, in the same physical configuration. No additional keys or slots.

I believe that you'll get USB2 data rates from your front panel. This assumes that your front panel connection isn't discrete wires like I've seen in old PC cases.

USB3 is another story. The older USB connector isn't compatible with it. Some motherboard makers supply an adapter to allow older USB front panel connectors to use the USB3 header on the motherboard. (At USB2 data rates. Apparently the board detects the missing wires.)

Corrections will be cheerfully accepted.
My System SpecsSystem Spec
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 Using USB 2 Device With USB 1 Cable




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