LG 19LU55 Owner's Manual page 15

USB IN SERVICE ONLY
1
2 AV (Audio/Video) IN
HDMI/DVI IN, HDMI IN
3
4 RGB IN (PC)
AUDIO IN (RGB/DVI)
OPTICAL DIGITAL AUDIO OUT
5
(Except 19/22LH20, 22LH200C)
ANTENNA/CABLE IN
6
7 RS-232C IN (CONTROL & SERVICE) PORT
COMPONENT IN
8
Power Cord Socket
9
15