The controls of the PCM are arranged around the display as well as around the CD/DVD slot.
A Left rotary knob : Sets the volume (short): Switches on or mutes the device (long): Switches the device on and off
B button C button D, , , , , , and main menu buttons E Right rotary knob : Highlights a menu item : Selects the highlighted menu item F Back button G button H Arrow buttons and ILift receiver button and End call button J Touchscreen K Slot for SIM card L Eject/retract button for CDs and DVDs