And exactly what is "at" that you are referring to.
With fingers.
no
You can't use mods on Mac or iMac, it only works on PC.
Anyone who can use a Windows PC.
About 1.75"
Yes
When running and not in sleep mode the 21.5" iMac uses 205 watts of power. The 27" iMac uses 310 watts. In sleep mode they each use around 2 watts.
You can plug up your 2012 iMac when you are finished using it. Nothing will happen to the iMac. After the iMac is fully charged, make sure to unplug it.
If it has a television capability.
yes its the same as a pc.
Yes, as long as your iMac has Mac OS9 or higher.
Yes, you can.