LG DU-52SZ51D Owner's Manual page 18

Reference
Cable sample
18 DLP Projection TV
HDMI Cable
(not supplied with the product)
HDMI to DVI Cable
(not supplied with the product)
Fiber Optic Digital Audio Cable
(not supplied with the product)
Analog Audio Cable(RCA type)
(not supplied with the product)
Analog Audio Cable(Stereo to RCA type)
(not supplied with the product)