Dell P2415Q Monitor - Manual (Page 25)

Setting Up the Monitor | 25
3 Turn on the monitor and the MHL source device.
4 Select input source on monitor to HDMI (MHL) by using OSD menu (see Using
the On-Screen Display (OSD) Menu for details).
5 If the monitor does not display an image, see Mobile High-Definition Link
(MHL) Specific Problems .
Organizing Your Cables
After attaching all necessary cables to your monitor and computer, (see Connecting
Your Monitor for cable attachment) organize all cables as shown above.