Historically speaking, all-in-one systems have not been known for their upgradeability. That has changed somewhat in recent years, with newer AIOs sporting swappable components, at least on the enthusiast end of the spectrum. The same is true of Apple’s latest 21.5-inch iMac with a Retina 4K display. A teardown shows that users can access

Source: Hot Hardware – Apple 21.5-inch 4K iMac Teardown Reveals Upgradeable Kaby Lake CPU And RAM