PERFECTPRO ROCK HART Mode D'emploi page 23

(5) Using the USB power to charge MP3 player or mobile phone.
Using AC power as power source.
5-1 Press and release SOURCE to select Aux In.
5-2 Connect USB cable (not supplied) between USB slot of
Rock Hart and I/O port of MP3 media player or mobile phone.
5-3 USB can offer 5V 0.5A power to charge MP3 player or
mobile phone.
Note:
1. It is recommended to use AC power to power the radio while charging
MP3 media player or mobile phone via USB slot, though the battery
is also able to charge the device. However using the battery to
charge the device will consume much energy and drain the
battery easily.
2. The USB charging may not support entire iPod and iPhone range.
3. It's recommended not to charge the portable hard disc, it may easily
overload the radio.
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