Screen size: 27 (2560x1440 resolution). Screen type: TFT Active-Matrix LCD. Features: Built-in FaceTime HD camera with microphone. Ports: Three powered USB 2.0 ports, Firewire 800, Gigabit Ethernet port, Kensington lock slot, Thunderbolt.

Apple iMac. Display: 21.5-inch (diagonal) LED-backlit display with IPS technology; 1920x1080 resolution with support for millions of colours. Operating System: OS X Mountain Lion. 2.9GHz quad-core Intel Core i5 processor (Turbo Boost up to 3.

Apple iMac. Display: 27-inch (diagonal) LED-backlit display with IPS technology; 2560x1440 resolution with support for millions of colours. Operating System: OS X Mountain Lion. 3.2GHz quad-core Intel Core i5 processor (Turbo Boost up to 3.

Mac Pro RAID Card delivers enhanced storage performance and data protection. 512MB of cache. Integrated 72-hour battery for protecting cache data.

Operating System: OS X Mountain Lion. Processor: 2.3GHz quad-core Intel Core i7 (Turbo Boost up to 3.3GHz, 6MB cache). RAM: 4GB DDR3. Hard Drive: 1TB (5400 rpm). Graphics: Intel HD Graphics 4000.

Apple iMac. Display: 21.5-inch (diagonal) LED-backlit display with IPS technology; 1920x1080 resolution with support for millions of colours. Operating System: OS X Mountain Lion. 2.7GHz quad-core Intel Core i5.

Apple LED Cinema. 27 LCD/TFT active matrix - LED backlight display. Resolution: 2560 x 1440. Colours: 16.7 million colours. Aspect Ratio: 16:9. Contrast Ratio: 1000:1. Integrated Speakers with Subwoofer. Integrated Camera. 1 year warranty

Operating System: OS X Mountain Lion. Processor: Dual-core Intel Core i5 (2.5 GHz). Memory: 4GB DDR3 (1600MHz). Hard Drive: 500GB (5400 rpm). Graphics: Intel HD Graphics 4000. Networking: 802.11n Wi-Fi wireless networking, Bluetooth 4.

Apple iMac. Display: 27-inch (diagonal) LED-backlit display with IPS technology; 2560x1440 resolution with support for millions of colours. Operating System: OS X Mountain Lion. 2.9GHz quad-core Intel Core i5 processor (Turbo Boost up to 3.