- iMac Essentials provides everything you need to set up and start using your new iMac. Learn how to turn on and use your mouse and keyboard, as well as how to connect to Wi-Fi, use the apps that came with your iMac, and much more.
- Is the first company in history to be valued at $1 trillion. Learn about how Steve Jobs and Steve Wozniak built an empire.
Connect multiple displays to your 27-inch iMac
You can connect up to two 4K displays or two 6K displays using the two Thunderbolt 3 ports on your iMac (Retina 5K, 27-inch, 2020).
Connect multiple displays to your 27-inch iMac. You can connect up to two 4K displays or two 6K displays using the two Thunderbolt 3 ports on your iMac (Retina 5K, 27-inch, 2020).
Learn how to connect multiple displaysClean the nano-texture glass on your 27-inch iMac
Follow these guidelines to clean the nano-texture glass display on your iMac (Retina 5K, 27-inch, 2020).
Find out how to clean your displayGet to know the T2 Security Chip
The data on your iMac (Retina 5K, 27-inch, 2020) is encrypted by the T2 Security Chip.
Read about the T2 Security ChipAdd memory to your iMac
Find out the type of memory your iMac uses and how to install additional memory.
Install memory in your iMacUse external displays with your iMac
Learn how to connect to HDMI, get help with external display issues, and more.
Get help with external displaysLearn about Mac accessories
Set up your keyboard, mouse, and trackpad and learn about other Mac accessories.
Get help with Mac accessoriesGet AppleCare+ for Mac
With AppleCare+, you’re covered. Get accidental damage coverage and 24/7 priority access to Apple experts.
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