********************** PLEASE NOTE The screen may dim a little bit brightness (because lower screen lamp, look attached pictures) in the beginning, before it warms up. ********************** Technical specifications: Operation system: OS X 10.13.5 High Sierra CPU: Intel quad-core i7 2 GHz processor Ram: 8 GB Storage: 1 TB SSD Graphic cards: AMD Radeon HD 6490M Intel HD Graphics 3000 Automatic graphics switching Screen 15.4-inch: 1440 by 900 (native) resolution DVD slot is in used by extension for second HDD/SSD (empty) New battery from 3-rd company, had been bought via BestBuy website Comes with: - 85 Watt power adapter Everything works perfect!