Two Usb Voltage Connected?

[Stardom]

usb voltage

I have two usb v+ wires attached to the same voltage line. Will this cause bad things to happen or is it fine? The usb both come from the same computer. Similarly, if I connected a different voltage to the V+ line which is in turn attached to the v+ wire of usb, would this be fine?

Thanks!

 

[leomecma]

When you connect two v+ usb line from same computer there are no problems. I don't understand the second question, but you can transform the v+ in other voltage (less or high) using correct devices, but connect a low impedance voltage source with different or same value not.

 

[ark5230]

Similarly, if I connected a different voltage to the V+ line which is in turn attached to the v+ wire of usb, would this be fine?
Thanks!

The different voltage could be any thing!! This could be hazardus to the computer and / or the supply connected.
Raoof