iMac 21.5-inch Late 2015 Datasheet

iMac 21.5-inch
Source: apple.com – iMac 21.5-inch

The Apple iMac 21.5-inch Late 2015 is a personal computer designed, manufactured, and sold by Apple from 2015 to 2017 as part of the iMac series. The computer was introduced on October 13, 2015, and its price started at $1,099.

The new iMac features a 1.6 GHz or 2.8 GHz Intel Core i5 processor, 8 GB or 16 GB of RAM, 21.5-inch glossy LED-backlit IPS LCD Display, 1 TB hard drive, Ambient Light Sensor, FaceTime HD camera, two Thunderbolt 2 ports USB 3.0 ports, an SDXD card slot, and 1.5 GB Intel HD Graphics 6000 graphics in the base model. This iMac comes with a new Magic Mouse 2 and the new Magic Keyboard instead of the old ones.

This iMac has been discontinued on June 5, 2017. Today iMac 21.5-inch Late 2015 is 8 years old!

iMac 21.5-inch Late 2015 Details

IntroducedOctober 13, 2015 – 8 years ago
DiscontinuedJune 5, 2017 – 7 years ago
Last Software UpdateMay 13, 2024 – 31 days ago
Time on the Market19 months (1 year)
Time of Support104 months (8 years)
Model IdentifieriMac16,1 (1.6 GHz)
iMac16,2 (2.8 GHz)
Model NumberA1418
Order NumberMK142LL/A (1.6 GHz)
MK442LL/A (2.8 GHz)
Original Price$1,099
ColorsSilver Aluminum
Weight12.5 Ibs.
5.669 KG
Dimensions17.7” H x 20.8” W x 6.9” D
44.95 cm H x 52.83 cm W x 17.52 cm D

iMac 21.5-inch Tech Specs


ProcessorIntel Core i5 5250U “Broadwell”
Intel Core i5 5575R “Broadwell”
Processor Speed1.6 GHz
2.8 GHz
Maximum Processor SpeedUp to 2.7 GHz (1.7 GHz)
Up to 3.3 GHz (2.8 GHz)
Number of Cores2 (1.6 GHz)
4 (2.8 GHz)
System BusIntel Direct Media Interface (DMI) at 5 GT/s
Cache3 MB L3 (1.6 GHz)
4 MB L3 (2.8 GHz)

Storage & Media

Storage1 TB HDD
1 TB Fusion Drive
2 TB Fusion Drive
256 GB SSD


Built-in Memory8 GB integrated PC3-14900 204-pin LPDDR3 1867 MHz
16 GB integrated PC3-14900 204-pin LPDDR3 1867 MHz
Maximum Memory16 GB
Memory SlotsNone
Interleaving SupportYes


Built-in Display21.5″ IPS LED-backlit TFT LCD glossy widescreen Display
Brightness330 cd/m²
Pixel Density103 ppi
Resolutions1920 x 1080


Graphics CardIntel HD Graphics 6000
Intel Iris Pro Graphics 6200
Graphics MemoryUp to 1.5 GB shared from main memory
Display Connection2 – Thunderbolt 2
Display SupportSupport for up to two Thunderbolt displays
Display ModesDual display extended, video mirroring, and AirPlay Mirroring
External ResolutionUp to 3840 x 2160 pixels (1.6 GHz)
Up to 4096 x 2304 pixels (2.8 GHz)
CameraFaceTime HD


Expansion Slots1 – Secure Digital (SDXC)
Hard Drive Interface1 – 6 Gbps Serial ATA (SATA)
1 – 8.0 GT/s PCIe x4


Ethernet10/100/1000BASE-T (RJ-45)
BluetoothBluetooth 4.0
USB4 – Up to 5 Gbps
Thunderbolt2 – Thunderbolt 2 (Up to 20 Gbps)
Audio In1 – 3.5-mm analog/optical combo jack
2 – Microphones
Audio Out1 – 3.5-mm analog/optical combo jack
2 – Built-in speakers
Display2 – Thunderbolt 2

Keyboard and Mouse

PeripheralsMagic Keyboard
Magic Mouse 2 or Magic Trackpad 2


Original OSOS X 10.11
Later OSOS X 10.11.1
Maximum OSmacOS 12.7.5
FirmwareIntel Extensible Firmware Interface
Unlock with Apple WatchSupported with macOS Sierra (Apple Watch (1st generation), Apple Watch Series 1, and Apple Watch Series 2)
macOS High Sierra or later (Apple Watch Series 3 or later)
Bundled SoftwareOS X 10.11


Backup Battery3 V CR2032 Lithium
Maximum Continuous Power205 W
Line Voltage100-240 V AC

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Disclaimer: The data presented in this article is under continuous development and has been manually collected from various sources based on their availability. The author of this article may revise this dataset as additional research is conducted and reviewed. Please note that the information is provided “as is” and “as available” without express or implied warranties. The author cannot be held responsible for any omissions, inaccuracies, or errors in the published information. Any warranties relating to this information are hereby disclaimed.