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Technical Specifications

Size and weight
21.5-inch iMac
Height:17.75 inches (45.1 cm)
Width:20.8 inches (52.8 cm)
Depth:7.42 inches (18.85 cm)
Weight:20.5 pounds (9.3 kg)1
27-inch iMac

Height:20.4 inches (51.7 cm)

Width:25.6 inches (65.0 cm)

Depth:8.15 inches (20.7 cm)

Weight:30.5 pounds (13.8 kg)1

Connections and expansion

One FireWire 800 port; 7 watts

Four USB 2.0 ports

SD card slot

Communications

Built-in AirPort Extreme 802.11n Wi-Fi wireless networking;2 IEEE 802.11a/b/g compatible

Built-in Bluetooth 2.1 + EDR (Enhanced Data Rate) wireless technology

Built-in 10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector)

Audio

Built-in stereo speakers

Two internal 17-watt high-efficiency amplifiers

Headphone/optical digital audio output (minijack)

Audio line in/optical digital audio input (minijack)

Built-in microphone

Support for Apple Stereo Headset with microphone

iMac is designed with the following features to reduce its environmental impact:



Arsenic-free display glass

BFR-free

PVC-free5

Highly recyclable aluminum and glass enclosures

Meets ENERGY STAR 5.0 requirements

Rated EPEAT Gold7

Display



Built-in 21.5-inch (viewable) or 27-inch (viewable) LED-backlit glossy widescreen TFT

active-matrix liquid crystal display with IPS technology

Resolution

21.5-inch models: 1920 by 1080 pixels

27-inch models: 2560 by 1440 pixels

16:9 aspect ratio

Millions of colors at all resolutions

Typical viewing angle: 178?horizontal; 178?vertical

Typical brightness: 320 cd/m2 (21.5-inch models); 375 cd/m2 (27-inch models)

27-inch model can be attached to a wall mount, articulating arm, or other VESA-compliant

mounting solution using the optional VESA Mount Adapter Kit

Graphics and video support

21.5-inch models, one of the following:

NVIDIA GeForce 9400M graphics processor with 256MB of DDR3 SDRAM shared with main

memory3

ATI Radeon HD 4670 graphics processor with 256MB of GDDR3 memory



27-inch model with dual-core processor