GCHD MK-II HD Out Converter for Gamecube – Retro Saga
EON Black GCHD MKII Video Adapter - Nintendo Gamecube - Dual Output - No Lag - Walmart.com
GCHD MK-II HDMI HD Adapter for Gamecube – VideoGamePerfection.com
DF Retro: the forgotten Nintendo tech that makes GameCube HDMI possible | Eurogamer.net
I was thinking about getting that GameCube hdmi converter by EON but it has the dual input that I have seen on some Gamecubes. What's the reason for some with dual inputs