Having just upgraded my HD theater with all HDMI for best all Digital viewing, I was in need of some HDMI peripherals to add some flexibility in my system.
It was hard to find guidance from the local sales person at the BB, CC stores.
After I studied, here are some essential HDMI peripherals:
HDMI switch. This allows multiple HDMI sources to be connected to a single HDTV.
HDMI switch. Which allows you to switch between multiple HDMI or DVI sources to 1 HDTV.
A HDMI splitter, on the other hand, will show a HD source or computer to 2 HD monitor.
You can use a HDMI splitter, it has 1 input and 2 HDMI outputs that lets you mirror both pictures on both displays. You don't need to do any switching, it will just show up on both displays.