Thunderbolt port that is backwards compatible with Mini DisplayPort and likewise supports an external display at 2560x1600 and passes an audio signal as well. Thunderbolt also supports other peripherals that use the Thunderbolt standard which provides up to 10 Gbps of bandwidth in both directions.

• 2.3GHz dual-core Intel Core i5 with 3MB on-chip shared L3 cache
• 16GB of 1333MHz DDR3 memory, HDMI port, Firewire port, four USB 2.0 ports
• 512GB Solid State Drive, Gigabit Ethernet Port, 802.11n Wi-Fi, Bluetooth 4.0
• Intel HD Graphics 3000 processor with 288MB of DDR3 SDRAM shared with main memory
• Mac OS X (Monitor not included, picture provided for size comparison, No keyboard or mouse or optical drive included)

2.3GHz dual-core Intel Core i5 with 3MB on-chip shared L3 cacheApple Computer