HP ProBook 4446s Notebook-PC - Manual (Page 22)

Right
Component Description
(1) USB 2.0 port Connect an optional USB device.
(2) Optical drive (select models only) Reads an optical disc.
NOTE: On select models, the optical drive also
writes to an optical disc.
(3) Optical drive light (select models only) Lights when the optical drive is active.
(4) Optical drive eject button (select models
only) Releases the optical drive disc tray.
12 Chapter 2 Getting to know your computer