Samsung SyncMaster 920LM User Manual page 13

AUDIO IN
Kensington Lock
See Connecting the Monitor
Connect the audio cable for your monitor to the audio port on the back
of your computer.
The Kensington lock is a device used to physically fix the system
when using it in a public place. (The locking device has to be
purchased separately. )
For using a locking device, contact where you purchase it.
Headphone connection terminal
for further information regarding cable connections.