So this just occured to me, usb 3.0 is faster than usb 2.0 right? So, aside from speed of transferring data will this also affect the speed at which devices charge over usb? You can have a fast charge if the usb is connected to a wall adapter right? My question is solely if you were connecting your charger to a computer or a laptop. Would the charging time be significantly different?
Another thing, if you were to add a usb port onto an old model powerbank, would there be a difference in charging speed or not?