iMac 21.5”

21.5-inch, 4K Retina display, 500 nits brightness

4096 x 2304 resolution with support for one billion colors

Wide color (P3)

3.0GHz 6-core Intel Core i5 (Turbo Boost up to 4.1GHz)

Radeon Pro 560X with 4GB of GDDR5 memory

256GB SSD 8GB of 2666MHz DDR4 memory

1080p FaceTime HD camera

Simultaneously supports full native resolution on the built-in display at millions of colors (21.5-inch) or 1 billion colors (21.5-inch 4K) and: One 5120‑by‑2880 (5K) external display at 60Hz with support for 1 billion colors, or Two 3840-by-2160 (4K UHD) external displays at 60Hz with support for 1 billion colors, or Two 4096‑by‑2304 (4K) external displays at 60Hz with support for millions of colors Thunderbolt 3 digital video output Native DisplayPort output over USB‑C Thunderbolt 2, HDMI, DVI, and VGA output supported using adapters (sold separately)