The HDMI's are switched among themselves to the 1 HDMI out. The components are switched between themselves to the component out. Component IN's are never converted to HDMI. the Onklo amp i have handles this no problem. i had a Wii connected via component and an appletv via HDMI and ...
There is an adapter for $175 but it can't output a high enough resolution to run the 27 inch iMac's display which I assume doesn't have a scaler. http://www.atlona.com/Atlona-DVI-to-...r-p-17859.html So I'm guessing that means no blu-ray players, DTV boxes, PS3, Wii, or...