how to disable galaxy s3 usb connection as media device to computer

[AC Question]

My galaxy s3 keeps usb connection as media device even when not connected to the laptop. I can't shut it off. Then when I plug it in to my laptop to charge, it interferes with Windows media player playing videos.

 

[B. Diddy]

Welcome to Android Central! When you connect via USB, swipe down the notification panel and tap the USB notification. Select Charge Only (if available).