Apple iMac (21.5-inch, Mid 2011) Technical Specifications

What are my Apple iMac (21.5-inch, Mid 2011) specs?

OVERVIEW
IntroducedMay 2011
Model IdentifieriMac12,1
Model NumberA1311
EMC2428
Order NumberMC309LL/A (2.5 GHz), MC812LL/A (2.7 GHz)
SupportNiwTech
ColorsSilver
Weight and Dimensions20.5 lbs., 17.75" H x 20.8" W x 7.42" D
PROCESSOR
ProcessorIntel Core i5 (2400S, 2500S) or Core i7 (2600S) ("Sandy Bridge")
Processor Speed2.5 or 2.7 GHz (Core i5) 2.8 GHz (Core i7)
Maximum Processor Speed
Architecture64-bit
Number of Cores4
Security ChipNo
Cache6 MB (2.5 and 2.7 GHz) 8 MB (2.8 GHz) on-chip shared L3
System BusIntel Direct Media Interface (DMI) at 2.5 GT/s
Logic board RepairNiwTech
STORAGE AND MEDIA
Storage500 GB, 1, or 2 TB (7200-rpm SATA) and/or 256 GB (SSD)
Storage UpgradeNiwTech
SSD UpgradeNiwTech
Data RecoveryNiwTech
MediaSlot-loading 8x SuperDrive (DVD±R DL/DVD±RW/CD-RW)
PERIPHERALS
PeripheralsApple Wireless Keyboard, Magic Mouse or Magic Trackpad
Peripherals RepairsNiwTech
SOFTWARE
Original OSMac OS X 10.6.6 (10J4026)
Maximum OSmacOS 10.13.6 (17G65)
OS installNiwTech
OS UpgradeNiwTech
OS DowngradeNiwTech
OS SupportNiwTech
AirDropSupported
Handoff
Power Nap
Unlock with Apple Watch
Hardware TestAHT 3A212
FIRMWARE
FirmwareIntel Extensible Firmware Interface (EFI)
MEMORY
Built-in MemoryNone
Maximum Memory32 GB (Actual) 16 GB (Apple)
Memory Slots4 - 204-pin PC3-10600 (1333 MHz) DDR3 SO-DIMM
Memory UpgradeNiwTech
Memory Upgrade InstructionsHow to remove or install memory
Interleaving SupportYes
DISPLAY
Built-in Display21.5-inch (viewable) LED-backlit glossy widescreen TFT LCD
Display Glass
Brightness
Pixel Density
Color Gamut
Resolutions1920 by 1080 pixels
Display ReplacementNiwTech
GRAPHICS
Graphics CardAMD Radeon HD 6750M or Radeon HD 6770M
Graphics Card ReplacementNiwTech
Graphics Memory512 MB GDDR5
Display ConnectionThunderbolt digital video output (Support for up to two Thunderbolt displays)
Display ModesDual display extended, video mirroring, AirPlay Mirroring, and Target Display
External ResolutionUp to 2560 by 1600 pixels
CAMERA
CameraBuilt-in FaceTime HD
CONNECTIONS
Wi-FiBuilt-in AirPort Extreme card (802.11a/b/g/n)
BluetoothBuilt-in Bluetooth 2.1 + EDR
Ethernet10/100/1000BASE-T (RJ-45)
ModemNone
USB4 - 480 MBit/s
FireWire1 - 800 MBit/s
Thunderbolt1 - Thunderbolt 1 (up to 10 Gbps)
DisplayThunderbolt digital video output (Support for up to two Thunderbolt displays)
Infrared1 - For Apple Remote only
Audio In1 - 3.5-mm analog/optical combo input jack, Built-in microphone
Audio Out1 - 3.5-mm analog/optical combo output jack, 2 - internal 17-watt amplifiers, Built-in speakers
Security Slot1 - Kensington cable lock
EXPANSION
Slots1 - Secure Digital (SDXC)
BaysNone
Hard Drive Interface2 - 6.0 Gbps Serial ATA (SATA)
Optical Drive Interface3.0 Gbps Serial ATA (SATA)
SENSORS
Liquid SensorNon
POWER
Backup Battery3 V CR2032 lithium
Maximum Continuous Power205 W
Line Voltage100-240V AC
Power Supply ReplacementNiwTech
ENVIRONMENTAL
Acoustical Performance18 dBA at idle
Power Consumption81 W (2.5 GHz Idle) 106 W (2.5 GHz CPU Max) 85 W (2.7 GHz Idle) 114 W (2.7 GHz CPU Max)
ENERGY STARMeets ENERGY STAR 5.2 requirements
EPEATGold
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