iMac16,2

iMac (Retina 4K, 21.5-inch, Late 2015)iMac2015EFI 64-bitno security chip

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iMac16,2 1920×1080 Retina 4K 0 of 2 configurations tested Cards Matrix

iMac (21.5-inch, Late 2015)

announced 2015-10-13 · discontinued 2017-06-05 · A1418 · EMC 2889

1920×1080 Quad-core Core i5 2.8 GHz · Iris Pro 6200 · 1920x1080 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

Integrated 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

Audio0/5 passed

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

Camera0/1 passed

Built-in webcamUntested

Networking0/3 passed

Wi-FiUntested
BluetoothUntested
EthernetUntested back-9

Ports0/3 passed

USB-A portsUntested back-3back-4back-5back-6
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 Detailsimac16-2-21-late-2015-a

CPU: Core i5-5575R 2.8 GHz · 4-core (Broadwell)
Memory: 8 GB LPDDR3-1866 · max 16 GB · soldered
Storage: 1 TB HDD · SATA · BTO 1 TB Fusion Drive, 256 GB SSD
Display: 21.5" 1920×1080 · LED IPS
Graphics: Intel Iris Pro Graphics 6200 · OpenGL ES 3.2
pci:8086:1622
Wi-Fi: Broadcom BCM43602 802.11ac
pci:14e4:43ba
Bluetooth: Apple Bluetooth 4.2 (USB 05ac:8294)
usb:05ac:8294
Audio codec: Cirrus Logic CS4208
Camera: Apple FaceTime HD camera (USB 05ac:8511)
usb:05ac:8511
Ethernet: Broadcom NetXtreme BCM57766 Gigabit Ethernet
pci:14e4:1686
Storage controller: Intel 9 Series SATA controller
pci:8086:8c83
Storage controller: Apple PCIe SSD (AHCI) BTO
pci:144d:a801 · pci:144d:1600 · pci:1b4b:9183 · pci:1179:010b
Thunderbolt controller: Intel DSL5520 "Falcon Ridge" Thunderbolt 2 controller
pci:8086:156c · pci:8086:156d
SD card reader: Broadcom BCM57765 SDXC card reader
pci:14e4:16bc
Ports: Headphone / line out (analog) · Optical digital audio out · Gigabit Ethernet · SD card slot · 2× Thunderbolt 2 · 4× USB 3 (Type-A)
Port layout: Download drawing (SVG)

Port methodology

Back:1back-1 Headphone / line out (analog) + Optical digital audio out2back-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 28back-8 Thunderbolt 29back-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.: MK442LL/A

iMac (Retina 4K, 21.5-inch, Late 2015)

announced 2015-10-13 · discontinued 2017-06-05 · A1418 · EMC 2833

Retina 4K Quad-core Core i5 3.1 GHz or Core i7 3.3 GHz · Iris Pro 6200 · Retina 4K 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

Integrated 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

Audio0/5 passed

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

Camera0/1 passed

Built-in webcamUntested

Networking0/3 passed

Wi-FiUntested
BluetoothUntested
EthernetUntested back-9

Ports0/3 passed

USB-A portsUntested back-3back-4back-5back-6
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 Detailsimac16-2-4k-late-2015-a

CPU: Core i5-5675R 3.1 GHz · 4-core
BTO: Core i7-5775R 3.3 GHz · 4-core (Broadwell)
Memory: 8 GB LPDDR3-1866 · max 16 GB · soldered
Storage: 1 TB HDD · SATA · BTO 1 TB Fusion Drive, 256 GB SSD, 512 GB SSD
Display: 21.5" 4096×2304 · Retina 4K LED IPS
Graphics: Intel Iris Pro Graphics 6200 · OpenGL ES 3.2
pci:8086:1622
Wi-Fi: Broadcom BCM43602 802.11ac
pci:14e4:43ba
Bluetooth: Apple Bluetooth 4.2 (USB 05ac:8294)
usb:05ac:8294
Audio codec: Cirrus Logic CS4208
Camera: Apple FaceTime HD camera (USB 05ac:8511)
usb:05ac:8511
Ethernet: Broadcom NetXtreme BCM57766 Gigabit Ethernet
pci:14e4:1686
Storage controller: Intel 9 Series SATA controller
pci:8086:8c83
Storage controller: Apple PCIe SSD (AHCI) BTO
pci:144d:a801 · pci:144d:1600 · pci:1b4b:9183 · pci:1179:010b
Thunderbolt controller: Intel DSL5520 "Falcon Ridge" Thunderbolt 2 controller
pci:8086:156c · pci:8086:156d
SD card reader: Broadcom BCM57765 SDXC card reader
pci:14e4:16bc
Ports: Headphone / line out (analog) · Optical digital audio out · Gigabit Ethernet · SD card slot · 2× Thunderbolt 2 · 4× USB 3 (Type-A)
Port layout: Download drawing (SVG)

Port methodology

Back:1back-1 Headphone / line out (analog) + Optical digital audio out2back-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 28back-8 Thunderbolt 29back-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.: MK452LL/A

Research notes (unverified)

Shared by the non-Retina 21.5-inch (MK442, 1920x1080) and the first Retina 4K 21.5-inch (MK452). Both use Iris Pro 6200.

Sources (8) and identifiers

Board IDs: Mac-FFE5EF870D7BA81A