I'd just like to ask about the dual head usb cable. as far as i know, 1 would be for data + power and the other would be for power alone in case the 1st have not enough power.
my question is, is it possible to connect the data + power cable to the laptop, while d additional power usb plugged into an external power supply (say from a 3 pin socket using a usb adaptor) ? will it hard the hardware in any way by doing so - external hard disc or usb modem?
reason:
my laptop has 3 usb ports. 1 is for my wifi mouse, 1 is for my hard disc and more recently a usb modem. however, whenever the usb modem is being used, the wifi mouse will not work properly which i assume is because of the lack of power.
any advice will be helpful. thanks
USB cable, dual head usb cable