Pins USB shield uses

I am using USB shield with arduino Uno and was connecting relay on pin 9 but it started to work not as program should do I thought it could be because shield
So what pins shield uses ??

So what pins shield uses ??

Which shield? You say USB Shield like there is only one.

I didn't know that pins are different from one usb shield to another
I mean usb shield in this link

You need to look at the schematics for the shield. DealExtreme does not make the board in the (not actually a) link.

The Sparkfun USB shield uses pins 7 to 13. That shield may, or may not, use the same pins.