Acer S243HL Monitor - How do I change the output source?

[kleptokat]

I just bought this new monitor, and I have a computer, and an Xbox, I would like to connect both devices to this monitor, and simply change the output at will, unfortunetly I cannot find this in the menu's, nor may I find it in its manual. I've tried a lot, and nothing has come to mind.

Thanks,
Klepto

 

[psyxix]

??? Read the manual again cause I just downloaded it to check and P15-16 are the instructions for the HDMI mode and DVI mode.