iMac 21.5″

21.5-inch (diagonal) LED-backlit display, 920‑by‑1080 resolution with support for millions of colors

  • One 5120‑by‑2880 (5K) external display at 60Hz with support for 1 billion colors.
  • Two 3840-by-2160 (4K UHD) external displays at 60Hz with support for 1 billion colors.
  • Two 4096‑by‑2304 (4K) external displays at 60Hz with support for millions of colors.
  • Simultaneously supports full native resolution on the built-in display at millions of colors.
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