That's 2 cables, found on radio shack, amazon and many places.
How to connect the PC is noted in the manual (link follows)
http://www.lg.com/lgecs.downloadFile.ldwf?DOC_ID=KROWM000409679&ORIGINAL_NAME_b1_a1=SAC35375604%28REV02%29_eng.pdf&FILE_NAME=KROWM000409679.pdf&TC=DwnCmd
See "Method C" on page 62
Bob

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