iMac18,2

iMac (Retina 4K, 21.5-inch, 2017)iMac2017EFI 64-bitno security chip

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iMac18,2 2017 0 of 1 configuration tested Cards Matrix

iMac (Retina 4K, 21.5-inch, 2017)

announced 2017-06-05 · discontinued 2019-03-19 · A1418 · EMC 3069

2017 Quad-core Core i5 3.0/3.4 GHz or Core i7 3.6 GHz · Radeon Pro 555 / 560 Untested0/22 tested

Boot0/3 passed

Stock installer boots via 64-bit EFIUntested
Internal storage detected and installation completesUntested
Installed system starts, restarts and shuts down cleanlyUntested

Graphics0/2 passed

Discrete GPU accelerationUntested
External display outputUntested back-7back-8

Display0/2 passed

Internal display at native resolutionUntested
Display brightness controlUntested

Power0/1 passed

Sleep and wakeUntested

Audio0/4 passed

Built-in speakersUntested
Built-in microphoneUntested
Headphone / analog audio outputUntested back-1
Audio over HDMI / DisplayPortUntested

Camera0/1 passed

Built-in webcamUntested

Networking0/3 passed

Wi-FiUntested
BluetoothUntested
EthernetUntested back-9

Ports0/4 passed

USB-A portsUntested back-3back-4back-5back-6
USB-C / Thunderbolt 3 ports (USB data)Untested back-7back-8
Thunderbolt devices (storage, docks, hotplug)Untested back-7back-8
SD card readerUntested back-2
Port methodology

Thermal0/2 passed

Temperature sensors report under loadUntested
Fans respond to loadUntested

Hardware Configuration Detailsimac18-2-4k-2017-a

CPU: Core i5-7400 3 GHz · 4-core; Core i5-7500 3.4 GHz · 4-core
BTO: Core i7-7700 3.6 GHz · 4-core (Kaby Lake)
Memory: 8 GB DDR4-2400 SO-DIMM · max 32 GB
Storage: 1 TB HDD / 1 TB Fusion Drive · SATA · BTO 256 GB SSD, 512 GB SSD, 1 TB SSD
Display: 21.5" 4096×2304 · Retina 4K LED IPS
Graphics: AMD Radeon Pro 450 / 455 / 460 / 555 / 560 / 555X / 560X (Polaris 11) · OpenGL ES 3.2
pci:1002:67ef
Wi-Fi: Broadcom BCM43602 802.11ac
pci:14e4:43ba
Bluetooth: Apple Bluetooth 4.2 (USB 05ac:8296)
usb:05ac:8296
Audio codec: Cirrus Logic CS8409 (with CS42L42)
Camera: Apple FaceTime HD camera (USB 05ac:8511)
usb:05ac:8511
Ethernet: Broadcom NetXtreme BCM57766 Gigabit Ethernet
pci:14e4:1686
Storage controller: Intel 100 Series SATA controller
pci:8086:a102
Storage controller: Apple SSD (Samsung NVMe) BTO
pci:144d:a804 · pci:144d:a806
Thunderbolt controller: Intel JHL6540 "Alpine Ridge" Thunderbolt 3 controller
pci:8086:15d3 · pci:8086:15d2 · pci:8086:15d4 · pci:8086:1578
SD card reader: Broadcom BCM57765 SDXC card reader
pci:14e4:16bc
Ports: Headphone / line out (analog) · Gigabit Ethernet · SD card slot · 2× Thunderbolt 3 (USB-C) · 4× USB 3 (Type-A)
Port layout: Download drawing (SVG)

Port methodology

Back:1back-1 Headphone / line out (analog)2back-2 SD card slot3back-3 USB 3 (Type-A)4back-4 USB 3 (Type-A)5back-5 USB 3 (Type-A)6back-6 USB 3 (Type-A)7back-7 Thunderbolt 3 (USB-C)8back-8 Thunderbolt 3 (USB-C)9back-9 Gigabit Ethernet
Numbered left to right as you face each side (top to bottom on a Mac Pro). Source: Apple manual
Features: Built-in display · Built-in speaker(s) · Built-in microphone · Cooling fan · Audio over Mini DisplayPort / Thunderbolt
Order no.: MNDY2LL/A · MNE02LL/A

Research notes (unverified)

Audio is a Cirrus Logic CS8409 codec; on many observed machines Linux fell back to the generic HDA parser, so audio needs attention in testing.
Radeon Pro 555 and 560 are the same Polaris 11 chip.

Sources (6) and identifiers

Board IDs: Mac-77F17D7DA9285301