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)

Built-in:

*(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

Typical

brightness:

*320 cd/m2 (21.5-inch models)

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

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

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

Graphics and

video support:

*NVIDIA GeForce 9400M graphics processor with 256MB of DDR3 SDRAM shared with main memory3

*Built-in iSight camera

*Mini DisplayPort output port with support for DVI, VGA, and dual-link DVI (adapters sold separately). 27-inch  

models also support input from external DisplayPort sources (adapters sold separately).

*Support for extended desktop and video mirroring modes

*Simultaneously supports full native resolution on the built-in display and up to a 30-inch display (2560 by 1600

pixels) on an external display

Software:

*Mac OS X v10.6 Snow Leopard (includes iTunes, Time Machine, Quick Look, Spaces, Spotlight, Dashboard,

Mail, iChat, Safari, Address Book, QuickTime, iCal, DVD Player, Photo Booth, Front Row, Xcode Developer

Tools)

*iLife (includes iPhoto, iMovie, iDVD, iWeb, GarageBand)

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

Processor

and memory:

*3.06GHz Intel Core 2 Duo processor with 3MB shared L2 cache                      

*4GB (two 2GB SO-DIMMs) of 1066MHz DDR3 SDRAM; four SO-DIMM slots support up to 16GB

Storage:

*500GB or 1TB 7200-rpm Serial ATA hard drive

*Optional 2TB 7200-rpm Serial ATA hard drive

Optical drive

* Slot-loading 8x SuperDrive (DVD±R DL/DVD±RW/CD-RW)

- Writes DVD+R DL and DVD-R DL discs at up to 4x speed

- Writes DVD-R and DVD+R discs at up to 8x speed

- Writes DVD-RW discs at up to 6x speed and DVD+RW discs at up to 8x speed

- Reads DVDs at up to 8x speed

- Writes CD-R discs at up to 24x speed

- Writes CD-RW discs at up to 16x speed

- Reads CDs at up to 24x speed

Electrical

and operating

requirements

* Line voltage: 100-240V AC

* Frequency: 50Hz to 60Hz, single phase

* Maximum continuous power: 241W (21.5-inch models); 365W (27-inch models)

* Maximum continuous power: 241W (21.5-inch models); 365W (27-inch models)

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

* Storage temperature: -4° to 116° F (-20° to 47° C)

* Relative humidity: 5% to 95% noncondensing

* Maximum altitude: 10,000 feet

* Typical acoustical performance

-Sound pressure level (operator position): 18 dBA at idle6