FeaturesApple iMac Core i3-550 Dual-Core 3.2GHz All-in-One System General Features: Aluminum design Mac OS X 10.6.1 pre-installed Core i3-550 Dual-Core 3.2GHz processor 1066 MHz Bus Speed, 4MB shared L2 cache 4 GB DDR3 SDRAM (16 GB maximum supported) 500GB Serial ATA hard drive Slot-loading 8x DVD±RW DL SuperDrive ATI Radeon HD 5670 graphics processing unit Integrated audio Built-in stereo speakers with two internal 17-watt high-efficiency amplifiers Built-in microphone Built-in 10/100/1000Base-T Ethernet Built-in 802.11n AirPort Extreme Wi-Fi wireless networking Built-in Bluetooth 2.1 + EDR (Enhanced Data Rate) SD card reader Built-in IR receiver Built-in iSight camera 21.5-inch LED-backlit glossy 16:9 widescreen TFT active matrix display Display Features: Pixels: 1920 x 1080, IPS technology Aspect ratio: 16:9 Millions of colors at all resolutions Typical viewing angle: 178 horizontal; 178 vertical Typical brightness: 320 cd/m²Supported Media: Secure Digital (SD)I/O Ports: One (1) Mini Display One (1) FireWire 800 Four (4) USB 2.0 One (1) RJ-45 Ethernet One (1) Optical digital audio output/headphone out One (1) Optical digital audio input/audio line inPower Specifications: 100 – 240V, 50/60Hz, 4.0A Unit Dimensions: 17.75 x 20.8 x 7.42-inches (H x W x D, approximate) Regulatory Approvals: FCC CE CSA VCCI C-Tick WEEEPackage IncludesApple iMac All-in-One System Mac OS X 10.6.1 pre-installed Mouse and keyboard Power cordAdditional InformationNotes: Model: iMac A1311 P/N: MC509LL/A Third Party Mouse and Keyboard Product Requirements: