- Model Name
- iMac (Retina 4K, 21.5-inch, Late 2015)
- Display
- 21.5-inch (diagonal) Retina 4K display with IPS technology, 4096-by-2304 resolution with support for millions of colors
- Processor & Graphic Options
- 3.1GHz quad-core Intel Core i5 (Turbo Boost up to 3.6GHz) | Intel Iris Pro Graphics 6200
- Memory
- 8GB of 1867MHz LPDDR3 onboard memory | 16GB of 1867MHz LPDDR3 onboard memory
- Storage
- 512GB SSD | 1TB HDD | 2TB Fusion Drive
- Video Support and Camera
- FaceTime HD camera | Simultaneously supports full native resolution on the built-in display and up to 4096 by 2304 pixels on an external display | Support for extended desktop and video mirroring modes
- Audio
- Stereo speakers | Dual microphones | 3.5 mm headphone jack (Headphone/optical digital audio output (minijack) / Support for Apple iPhone headset with microphone)
- Connections and Expansion
- 3.5 mm headphone jack | SDXC card slot | Four USB 3 ports (compatible with USB 2) | Two Thunderbolt 2 ports | Mini DisplayPort output | Support for HDMI, DVI, VGA, and dual-link DVI (adapters sold separately) | 10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector) | Kensington lock slot
- Wi-Fi
- 802.11ac Wi-Fi wireless networking | IEEE 802.11a/b/g/n compatible
- Bluetooth
- Bluetooth 4.0 wireless technology
- Size & Weight
- 21.5-inch iMac
- Operating System
- macOS Sierra