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.Support for extended desktop and video mirroring modes.Mini DisplayPort output port with support for DVI, VGA, and dual-link DVI via adapter 4.24-inch model with 3.06GHz processor, one of the following:.ATI Radeon HD 4850 graphics processor with 512MB of GDDR3 memory.NVIDIA GeForce GT 130 graphics processor with 512MB of GDDR3 memory.NVIDIA GeForce GT 120 graphics processor with 256MB of GDDR3 memory.
24-inch model with 2.93GHz processor, one of the following:. NVIDIA GeForce 9400M graphics processor with 256MB of DDR3 SDRAM shared with main memory 3. 20-inch and 24-inch model with 2.66GHz processor. Typical contrast ratio: 800:1 (20-inch model) 750:1 (24-inch models). Typical brightness: 290 cd/m 2 (20-inch model) 385 cd/m 2 (24-inch models). Built-in 20-inch (viewable) or 24-inch (viewable) glossy widescreen TFT active-matrix liquid crystal display. L pAm is the mean A-weighted sound pressure level measured at the operator position (rounded to the nearest dB). L WAd is the statistical upper-limit A-weighted sound power level (rounded to the nearest 0.1 B). Highly recyclable aluminum and glass enclosuresĭECLARED NOISE EMISSIONS in accordance with ISO 9296. iLife ’09 (includes iPhoto, iMovie, iDVD, iWeb, GarageBand). Mac OS X v10.5 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). Support for Apple Stereo Headset with microphone. Audio line in/optical digital audio input (minijack). Headphone/optical digital audio output (minijack). 
Built-in 10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector).Built-in Bluetooth 2.1 + EDR (Enhanced Data Rate).
Built-in AirPort Extreme Wi-Fi wireless networking (based on IEEE 802.11n draft specification) 2 IEEE 802.11a/b/g compatible.Total of six USB 2.0 ports: four ports on computer, two ports on wired keyboard.
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