My desktop Mac wakes from Sleep mode at night
iMac 21.5 inch, Mid 2011 running High Sierra. Wakes at night, several times nightly. I tried turning it Off at night, but started having fan issues immediately. Can't move it to another room (is in our bedroom) because of availability of ISP connections, etc. Anyone else have this problem? Or a solution?
iMac 21.5″, macOS 10.13