Basic Operation Basic Operation 11. HEADPHONE JACK - Allows the use of wired headphones (not included) to be connected to the monitor. 12. USB jack - When you insert an external input, the system will automatically enter the USB external function. The USB is form of DAT, AVI, MPEG1, MPEG2, DIVX6.0 below use only. USB adaptor provided. Loading a Disc To open/reveal the DVD loading slot, PRESS on the top-center of the monitor frame ( indicated by the Nameplate).