Tablet Shut Down with USB Connected

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http://forum.xda-developers.com – Hi. I'm a new user of tf300t. so far everything is good and excellent with this tablet but one problem that i need someone to help me with. It occurs everything i connected any pendrive, external hd via the usb port. The first 1 minute, everything is normal, i can access the hd and make a transfer. However, the problem started when the screen dims and times out (default time out for my tablet is 1 minute) while the usb is connected. It will automatically turned off and i had to press the 'on' button to reboot the tablet. My current solution is to turn off the time out (1 minute -> never (HowTos)