HP Pavilion dv5221tx Notebook PC - Manual (Page 19)

Component Description
(2) Audio-in (microphone) jack Connects an optional computer headset microphone or a microphone.
(3) ExpressCard slot Supports optional ExpressCard/54 or ExpressCard/34 cards.
(4) USB port (select models only) Connects an optional USB device.
(5) Optical drive Reads an optical disc.
(6) RJ-11 (modem) jack Connects a modem cable.
(7) Power connector Connects an AC adapter or an optional power adapter.
ENWW Components 9