Who wants to know the power consumption of the external USB drive or the phone-charging should purchase such USB multimeter. The separate display for voltage and current is quite convenient, the accuracy is sufficient and the price is reasonable priced. The switch-on peak current of ext. HD reveals still, a max memory key would certainly be helpful. The brightness of the display can be increased if you removed the protective film from the LED display. The screw opening is located under the back label. Simply peel off the protective film from the LED display and screw it on again.
