I own a Dell inspiron 17r n7110 and it has 3 usb ports. One usb 2.0 and two usb 3.0. My Ziebal 60 keyboard requires 2 usb ports to operate at highest performance and it provides two usb 2.0 ports when it is plugged in. For some reason whenever I plug the keyboard into my two 3.0 ports it does not get any power at all, or register. For that matter I can't get any usb 2.0 device to work in a 3.0 port. Is this a limitation of usb 3.0, an issue with my keyboard, or am I supposed to do something to turn on my 3.0 ports?
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