Dell W3706MC Owner's Manual page 45

Inputs
Audio (PC)
Audio (DVI)
Others
RS232
Outputs
Composite (CVBS)
Audio out (L+R)
Subwoofer
Coaxial digital audio out
Optical digital audio out
Audio
Effects
Speakers (separate)
one (bottom)
one (bottom)
one (bottom)
one (bottom)
(valid for Composite, S-Video and Analog TV
input only)
one pair (bottom)
one (bottom)
one (bottom) (for Digital TV input only)
one (bottom) (for Digital TV input only)
SRS TruSurround XT
Midnight Mode
15 watts/channel
30 watts total
Specifications for Your TV
45