The Four Channel MCE supports four video inputs, illustrated in the image below.
The first card supports two HD video inputs via adapter. The adapter breaks out to two DVI inputs. Each DVI input supports either DVI, VGA, or HDMI. The first card also supports two composite video inputs via adapter connected to the DB9 connector. You may use any combination of two inputs for this card.
The next two cards support HDMI, or composite video via adapter connected to DB9 connector. Each card supports one video input.
Adapters for Dual Channel Card. Y-Cable to DVI, DVI to HDMI/Component, DVI to VGA, DB9 to composite.
NOTE: Some MCE platforms may be configured with two dual input cards.