I have the following equipment:
An iMac 27" (mid-2011 windows 8 BOOTCAMP with 2 thunderbolt port and 1 miniDisplayPort)
An ASUS ROG laptop (with 1x VGA port/Mini D-sub 15-pin for external monitor / Mini display-port / 1 x HDMI)
An External monitor with HDMI, VGA and DVI input.
I want to use the display on my iMac as a 2nd screen from my asus laptop, leaving the iMac to use the external Monitor instead of it's own screen. Essentially, I would like to use the iMac screen as an external monitor while still having the iMac running a full OS, not just being used an a monitor. Is it possible for this iMac to either a) receive input to be used as an external monitor, and b) if so, can it still be used as a computer at this point?