Display

•21.5-inch (diagonal) Retina 4K display with IPS technology

•4096-by-2304 resolution with support for millions of colors

Processor

3.0GHz quad-core Intel Core i5

RAM

8GB of 1867MHz LPDDR3 onboard memory

Hard Drive

1GB SSD storage

Graphics Coprocessor

Intel Iris Pro Graphics 6200

Wireless Type

• 802.11ac Wi-Fi wireless networking, IEEE 802.11a/b/g/n compatible

•Bluetooth 4.0 wireless technology

Connections

• 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

Display Support

Connect up to: 

•Three dual-cable 5K displays

•Six Thunderbolt displays

Audio Support

• Stereo speakers

•Dual microphones

•3.5 mm headphone jack

◦Headphone/optical digital audio output (minijack)

◦Support for Apple iPhone headset with microphone

Video Support

• 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