78 (U.S.) or 79 (ISO) keys including 12 full-height function keys and 4 arrow keys in an inverted-T arrangement.Supported formats include AAC, MP3, Apple Lossless, FLAC, Dolby Digital, Dolby Digital Plus, and Dolby Atmos.Supported formats include HEVC, H.264, and ProRes.DVI output using HDMI to DVI Adapter (sold separately).Support for one display with up to 4K resolution at 60Hz.VGA, HDMI, DVI, and Thunderbolt 2 output supported using adapters (sold separately).Up to three external displays with up to 6K resolution and one external display with up to 4K resolution at 60Hz at over a billion colors (M1 Max).Up to two external displays with up to 6K resolution at 60Hz at over a billion colors (M1 Pro) or.Simultaneously supports full native resolution on the built-in display at 1 billion colors and: Three Thunderbolt 4 (USB-C) ports with support for:.Fast-charge capable with 96W USB-C Power Adapter.96W USB-C Power Adapter (included with M1 Pro with 10-core CPU or M1 Max, configurable with M1 Pro with 8-core CPU).

67W USB-C Power Adapter (included with M1 Pro with 8-core CPU).

Up to 17 hours Apple TV app movie playback.

ProMotion technology for adaptive refresh rates up to 120Hz.

XDR brightness: 1000 nits sustained full-screen, 1600 nits peak 2 (HDR content only).

14.2-inch (diagonal) Liquid Retina XDR display 1 3024-by-1964 native resolution at 254 pixels per inch.

M1 Max with 10-core CPU and 32-core GPU.

M1 Max with 10-core CPU and 24-core GPU.

M1 Pro with 10-core CPU and 16-core GPU.

M1 Pro with 10-core CPU and 14-core GPU.Hardware-accelerated H.264, HEVC, ProRes, and ProRes RAW.8-core CPU with 6 performance cores and 2 efficiency cores.

Macbook pro os x screen size