Hi!, this is my very first plugin for custom firmware, it was tested in DA 3.10 A2. It does not work in Game mode.   
 
Are you too lazy to go to the USB connection Menu an press X to start/stop it?...  well, this plugin may save you some steps...   
Just press L and R at same time and the usb connection will be activated/deactivated    
To install add the line:   "ms0:/seplugins/quickusb.prx"  to the vsh.txt file and enter in recovery mode -> plugins to ativate. 
   
Enjoy it.

super_H.