HP Compaq Presario C542EA Notebook PC - Manual (Page 14)

Right-side components
Component Description
(1) Audio-out (headphone) jack Produces system sound when connected to optional powered
stereo speakers, headphones, ear buds, a headset, or television
audio.
(2) Audio-in (microphone) jack Connects an optional computer headset microphone or a
microphone.
(3) USB port (select models only) Connects an optional USB device.
(4) Optical drive Reads an optical disc.
(5) RJ-11 (modem) jack Connects an optional modem cable.
(6) Power connector Connects an AC adapter or an optional power adapter.
8 Chapter 1 Notebook Tour ENWW