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Identification and Background

Released November 30, 2012, the 21.5" iMac EMC 2544 features improved specifications and significantly redesigned internals, housed in a much slimmer case. It can be identified by its model number A1418 and EMC number, 2455, both of which are located beneath the single foot.

Technical Specs


  • 21.5-inch LED-backlit display with IPS technology
  • 1920-by-1080 resolution with support for millions of colors


  • 1TB (5400-rpm) hard drive or 1TB Fusion Drive.


  • 2.7GHz or 2.9GHz quad-core Intel Core i5 processor (Turbo Boost up to 3.2GHz or 3.6GHz) with 6MB L3 cache or 3.1GHz quad-core Intel Core i7 (Turbo Boost up to 3.9GHz).


  • 8GB or 16GB of 1600MHz DDR3 memory

Wireless Connectivity:

  • 802.11n Wi-Fi wireless networking; IEEE 802.11a/b/g compatible
  • Bluetooth 4.0 wireless technology

Graphics and Video:

  • NVIDIA GeForce GT 640M graphics processor or NVIDIA GeForce GT 650M graphics processor
  • FaceTime HD camera


  • SDXC card slot
  • Four USB 3 ports
  • Two Thunderbolt ports
  • 10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector)


  • Stereo speakers
  • Dual microphones
  • Headphone port
  • Headphone/optical digital audio output (minijack)
  • Support for Apple iPhone headset with microphone

What’s in the Box:

  • iMac
  • Apple Wireless Keyboard
  • Apple Magic Mouse
  • Power cord


  • Height: 17.7 inches (45.0 cm)
  • Width: 20.8 inches (52.8 cm)
  • Stand depth: 6.9 inches (17.5 cm)
  • Weight: 12.5 pounds (5.68 kg)

Additional Information

Apple: iMac

Wikipedia: iMac

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