This is the IO Circuit Board, sometimes called a Databoard- this houses one VGA video-out port; that connects to the Vostro 3480 and 3481 motherboard.
Compatible Dell Laptops/Notebooks:
Vostro 3480
Vostro 3481
DP/N: WDKCP, 0WDKCP; WH7PG
alternate P/N's:
EDI72
LS-G715P