VGA output using Mini DisplayPort to VGA Adapter (optional).DVI output using Mini DisplayPort to DVI Adapter (optional).Dual display and video mirroring: Simultaneously supports full native resolution on the built-in display and up to 2560 by 1600 pixels on an external display, both at millions of colors.Intel HD Graphics 3000 with 384MB of DDR3 SDRAM shared with main memory 5.AMD Radeon HD 6750M graphics processor with 512MB of GDDR5 memory on 2.2GHz configuration or AMD Radeon HD 6770M graphics processor with 1GB of GDDR5 memory on 2.4GHz configuration.15.4-inch (diagonal) LED-backlit glossy or optional antiglare widescreen display with support for millions of colors.Meets ENERGY STAR Version 5.2 requirements.Highly recyclable aluminum and glass enclosure.MacBook Pro is designed with the following features to reduce its environmental impact: Support for Apple iPhone headset with microphone.

Audio line out/headphone minijack (digital/analog).

Audio line in minijack (digital/analog).

Omnidirectional microphone (located under left speaker grille).

Bluetooth 2.1 + EDR (Enhanced Data Rate) wireless technology.

Wi-Fi wireless networking 2 (based on IEEE 802.11n specification) IEEE 802.11a/b/g compatible.

Apple macbook pro 2011 15 inch