Dell W4200HD Owner's Manual page 43

Outputs
Composite (CVBS)
Audio (RCA L+R)
Subwoofer
SPDIF (RCA + Optical)
Audio
Effects
Speakers (separate)
one (bottom)
one pair (bottom)
one
one (HD model only)
SRS TruSurround XT
Midnight Mode
20 watts/channel
40 watts total
Specifications for Your TV
43