USB 3.0, Thunderbolt 3.0
In which year did USB 3.0 & Thunderbolt 3.0 start being installed in 27" iMacs?
In which year did USB 2.0 & Thunderbolt 2.0 start being installed in 27" iMacs?
Are units with USB and thunderbolt 1.0 or 2.0 upgradeable to 2.0 or 3.0?
iMac 27", macOS 10.12