Maximum write: 8x DVD-R, DVD+R 4x DVD-R DL (double layer), DVD+R DL (double layer), DVD-RW, DVD+RW 24x CD-R 10x CD-RW.8x slot-loading SuperDrive (DVD±R DL/DVD±RW/CD-RW).500GB or 750GB 5400-rpm Serial ATA hard drive optional 750GB 5400-rpm hard drive or 128GB, 256GB, or 512GB solid-state drive 6.4GB (two 2GB SO-DIMMs) of 1333MHz DDR3 memory two SO-DIMM slots support up to 8GB.2.4GHz dual-core Intel Core i5 processor with 3MB shared 元 cache or 2.8GHz dual-core Intel Core i7 processor with 4MB shared 元 cache.Multi-Touch trackpad for precise cursor control supports inertial scrolling, pinch, rotate, swipe, three-finger swipe, four-finger swipe, tap, double-tap, and drag capabilities.Full-size backlit keyboard with 78 (U.S.) or 79 (ISO) keys, including 12 function keys and 4 arrow keys (inverted “T” arrangement).HDMI audio and video output using a third-party Mini DisplayPort to HDMI Adapter.

Dual-link DVI output using Mini DisplayPort to Dual-Link DVI Adapter supports 30-inch Apple Cinema HD Display (optional).

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 5.13.3-inch (diagonal) LED-backlit glossy 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.Combined headphone/line in (supports digital output).

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.

2011 macbook pro ram