iMac 27 inch 5K 4GHz Intel Core i7 16GB RAM 256GB SSD Late 2015 BTO/CTO Grade (C)

iMac (Retina 5K, 27-inch, Mid 2015) Display 27-inch (diagonal) Retina display with IPS technology; 5120‑by‑2880 resolution with support for millions of colors Processor 4GHz quad-core Intel Core i7 processor  Memory 16GB DDR3 RAM Storage1 256GB SSD Graphics AMD Radeon R9 M390 graphics processor with 2GB of GDDR5 memory Video Support and Camera FaceTime HD camera Simultaneously supports full native resolution on the built-in display and up to 3840 by 2160 pixels on an external display Support for extended desktop and video mirroring modes Audio Stereo speakers Dual microphones Headphone port Headphone/optical digital audio output (minijack) Support for Apple iPhone headset with microphone Connections and Expansion Headphone port SDXC card slot Four USB 3 ports (compatible with USB 2) Two Thunderbolt 2 ports Mini DisplayPort output Support for DVI, VGA, and dual-link DVI (adapters sold separately) 10/100/1000BAS