iMac 21.5-inch Technical Specifications
Display
21.5-inch (diagonal) LED-backlit display
1920‑by‑1080 resolution with support for millions of colors
Processor
2.3GHz dual‑core Intel Core i5, Turbo Boost up to 3.6GHz
Memory
8GB of 2133MHz DDR4 memory
Storage1
256GB
256GB SSD
Graphics
Intel Iris Plus Graphics 640
Video Support and Camera
FaceTime HD camera
Simultaneously supports full native resolution on the built-in display at millions of colors and:
One 5120‑by‑2880 (5K) external display at 60Hz with support for 1 billion colors, or
Two 3840-by-2160 (4K UHD) external displays at 60Hz with support for 1 billion colors, or
Two 4096‑by‑2304 (4K) external displays at 60Hz with support for millions of colors
Thunderbolt 3 digital video output
Native DisplayPort output over USB‑C
Thunderbolt 2, HDMI, DVI, and VGA output supported using adapters (sold separately)
Audio
Stereo speakers
Microphone
3.5 mm headphone jack
Connections and Expansion
3.5 mm headphone jack
SDXC card slot
Four USB-A ports
Two Thunderbolt 3 (USB-C) ports with support for:
- DisplayPort
- Thunderbolt (up to 40Gb/s)
- USB 3.1 Gen 2 (up to 10Gb/s)
- Thunderbolt 2, HDMI, DVI, and VGA supported using adapters (sold separately)
10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector)
Kensington lock slot
Input
Magic Keyboard
Magic Mouse
Wireless
Wi-Fi
802.11ac Wi-Fi wireless networking
IEEE 802.11a/b/g/n compatible
Bluetooth
Bluetooth 4.2 wireless technology
Size and Weight
Height: 17.7 inches (45.0 cm)
Width: 20.8 inches (52.8 cm)
Stand depth: 6.9 inches (17.5 cm)
Weight: 12.0 pounds (5.44 kg)2
Electrical and Operating Requirements
Line voltage: 100–240V AC
Frequency: 50Hz to 60Hz, single phase
Operating temperature: 50° to 95° F (10° to 35° C)
Relative humidity: 5% to 90% noncondensing
Operating altitude: tested up to 16,400 feet (5000 meters)
In the Box
iMac
Magic Keyboard
Magic Mouse
Power cord
Lightning to USB Cable
Polishing cloth
Operating System
macOS
macOS is the most advanced desktop operating system in the world. macOS Big Sur introduces a bold new design and major updates to apps — taking macOS to a new level of power and beauty.
Accessibility
Accessibility features help people with disabilities get the most out of their new iMac. With built-in support for vision, hearing, mobility, and learning, you can create and do amazing things.
Features include:
- VoiceOver
- Zoom
- Increase Contrast
- Reduce Motion
- Dictation
- Switch Control
- Closed Captions
- Text to Speech
Built-in Apps3
iMac and the Environment
We take responsibility for the environmental footprint of our products throughout their life cycle. Learn more
The 21.5-inch iMac is designed with the following features to reduce its environmental impact:4
Smarter chemistry5
- Arsenic-free display glass
- Mercury-, BFR-, PVC-, and beryllium-free
Responsible packaging
- 100% of virgin wood fiber comes from responsibly managed forests
Recycling
Apple takes a holistic view of materials management and waste minimization. Learn more about how to recycle your Mac.
Learn more
Read the 21.5-inch iMac Environmental Report for detailed information on this product’s environmental performance.