Apple MacBook Pro MGXC2LL A 15.4 Inch Laptop with Retina Display 2.5GHz Quad Core Intel Core i7 16GB 512GB SSD WCam OS X Yosemite Dell Precision M6500 Intel Core i7 Q740 1.73Ghz 12GB 160GB 17.3" RW Windows 7 Professional and bold rubber outsoles make and bold rubber outsoles make for a shoe that adds a touch of class to any outfit Dell Chiclet Keyboard with Multi touch Touchpad 4" Backlight LED Aspect Ratio 16:10 Finish Glossy Native Resolution 2880 x 1800 Supported Resolutions 2880 x 1800 at 16:10 Aspect Ratio 1920 x 1200 at 16:10 Aspect Ratio 1680 x 1050 at 16:10 Aspect Ratio 1280 x 800 at 16:10 Aspect Ratio 1024 x 640 at 16:10 Aspect Ratio External Resolution Up to 2560 x 1600 Storage Hard Drive Installed: 512 GB Type: PCIe Based Flash Optical Drive None Input Output Connectors Ports 2x Thunderbolt 22x USB 3 10 Yosemite Keyboard Keys: 78Type: Standard Notebook KeyboardFeatures: Backlight Pointing Device TouchPad with Double Tap