We are SPECIALIZED in wholesale supply of brand new 100% original China brand computer factory unlocked, Such as apple macbook, Samsung, asus, Toshiba, lenovo, Acer,HP,And so on. Order from www.saleholy.com Specifications Display 27-inch (diagonal) LED-backlit display with IPS technology; 2560-by-1440 resolution with support for millions of colors Processor 3.4 GHz quad-core Intel Core i5 (Turbo Boost up to 3.8 GHz) with 6 MB shared L3 cache Storage 1 TB (7200 RPM) hard drive Memory 8 GB of 1600 MHz DDR3 memory (two 4 GB; four user-accessible SO-DIMM slots; maximum of 16 GB or 32 GB) Graphics NVIDIA GeForce GTX 775M graphics processor with 2 GB of GDDR5 memory Video Thunderbolt digital video output (native Mini DisplayPort output); compatible with DVI, VGA, and dual-link DVI output using optional adapters Audio Stereo speakers; dual microphones; headphone/optical digital audio output (minijack); support for Apple iPhone headset with microphone Connections Two Thunderbolt port (up to 10 Gbps) Four USB 3 ports (up to 5 Gbps; compatible with USB 2) SDXC card slot Gigabit Ethernet port