iMac 21.5-inch Technical Specifications

Display

21.5-inch (diagonal) LED-backlit display
1920x1080 resolution with support for millions of colours

Processor

2.3GHz dual‑core Intel Core i5, Turbo Boost up to 3.6GHz

Price

Memory

8GB of 2133MHz DDR4 memory

Configurable to 16GB

Storage1

256GB

256GB SSD

Configurable to 1TB Fusion Drive

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 colours and:

One 5120x2880 (5K) external display at 60Hz with support for 1 billion colours, or

Two 3840x2160 (4K UHD) external displays at 60Hz with support for 1 billion colours, or

Two 4096x2304 (4K) external displays at 60Hz with support for millions of colours

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

3.5mm headphone jack

Connections and Expansion

3.5mm 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

Configurable with Magic Keyboard with Numeric Keypad

Configurable with Magic Trackpad

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: 45.0 cm (17.7 inches)

Width: 52.8 cm (20.8 inches)

Stand depth: 17.5 cm (6.9 inches)

Weight: 5.44 kg (12.0 pounds)2

Electrical and Operating Requirements

Line voltage: 100–240V AC

Frequency: 50Hz to 60Hz, single phase

Operating temperature: 10° to 35° C (50° to 95° F)

Relative humidity: 5% to 90% non-condensing

Operating altitude: tested up to 5,000 metres (16,400 feet)

Limited Warranty and Service

In Ireland, consumers are entitled to a free-of-charge repair or replacement, by the seller, of goods that do not conform with the contract of sale. Under Irish law, consumers have up to six years from the date of delivery to exercise their rights; however, various factors may impact your eligibility to receive these remedies. For more details, click here.

Your iMac also comes with 90 days of complimentary technical support and a one-year limited warranty from Apple. To learn more about how Apple will service your iMac, click here.

Purchase AppleCare+ to get up to three years of expert technical support and hardware coverage, including up to two incidents of accidental damage protection every 12 months, each subject to an excess fee. For more information, click here.

In the Box

iMac

Magic Keyboard

Magic Mouse

Power lead

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.

Learn more

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
  • Siri and Dictation
  • Switch Control
  • Closed Captions
  • Text to Speech
Built-in Apps3
  • App Store
  • Books
  • Calendar
  • Contacts
  • FaceTime
  • Find My
  • GarageBand
  • Home
  • iMovie
  • Keynote
  • Mail
  • Maps
  • Messages
  • Music
  • Notes
  • Numbers
  • Pages
  • Photo Booth
  • Photos
  • Podcasts
  • Preview
  • QuickTime Player
  • Reminders
  • Safari
  • Siri
  • Stocks
  • Time Machine
  • TV
  • Voice Memos
Configure to Order

Configure your iMac with these options.

Looking for an iMac you can mount on a wall or an adjustable arm? Choose an iMac with a Built-in VESA Mount Adapter

Magic Trackpad

Magic Keyboard with Numeric Keypad

16GB memory upgrade

1TB Fusion Drive

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 fibre comes from responsibly managed forests

Apple Trade In

Letting go of your old device is easy with Apple Trade In. If it’s in good shape, you can trade it in for credit. If it’s not eligible for credit, we’ll recycle it responsibly at no cost to you. Good for you. Good for the planet.

See how it works

Learn more

Read the 21.5-inch iMac Environmental Report for detailed information on this product’s environmental performance.

Which Mac is right for you?

Compare all Mac models