Samsung 400PXn - Manual (Page 45)

the speaker connection jack on the back of the speaker.
Note
• Do not move the SET while the SET is connected to the speakers.
The speaker-bracket for connecting the SET speaker my become damaged.
Connecting to an Audio System
1) Connect a set of audio cables between the AUX L, R jacks on the AUDIO SYSTEM and the AUDIO OUT
[L-AUDIO-R] on LCD Display.
Connecting a LAN Cable
1) Connect the LAN cable.
Connecting a USB device