Apple iMac 21.5" Mid 2011 High Sierra OS

iMac (21.5-inch, Mid 2011) - Technical Specifications
 
Display
21.5-inch (viewable) LED-backlit glossy widescreen TFT display with support for millions of colors
Resolution: 1920 by 1080 pixels
 
Processor
2.5GHz quad-core Intel Core i5 with 6MB on-chip shared L3 cache
 
Memory
8GB (4 x 2GB) of 1333MHz DDR3 memory
 
Storage
500GB (7200 rpm) hard drive
 
Graphics
AMD Radeon HD 6750M graphics processor with 512MB of GDDR5 memory
 
Video Support and Camera
FaceTime HD camera
Simultaneously supports full native resolution on the built-in display and up to a 30-inch display (2560 by 1600 pixels) on an external display
Support for extended desktop and video mirroring modes
 
Audio
Built-in stereo speakers
Two internal 17-watt high-efficiency amplifiers
Headphone/optical digital audio output (minijack)
Audio line in/optical digital audio input (minijack)
Built-in microphone
Support for Apple iPhone headset with microphone
 
Connections and Expansion
One Thunderbolt port
Mini DisplayPort output with support for DVI, VGA, and dual-link DVI (adapters sold separately)
One FireWire 800 port; 7 watts
Four USB 2.0 ports
SDXC card slot
Slot-loading 8x SuperDrive with 4x double-layer burning (DVD±R DL/DVD±RW/CD-RW)
Audio in/out
10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector)
IR receiver
 
Wireless
Wi-Fi
802.11n Wi-Fi wireless networking;2 IEEE 802.11a/b/g compatible
Bluetooth
Bluetooth 2.1 + EDR (Enhanced Data Rate) wireless technology
 
Size and Weight
Height: 17.75 inches (45.1 cm)
Width: 20.8 inches (52.8 cm)
Depth: 7.42 inches (18.85 cm)
Weight: 20.5 pounds (9.3 kg)
 
Electrical and Operating Requirements
Line voltage: 100-240V AC
Frequency: 50Hz to 60Hz, single phase
Maximum continuous power: 205W
Operating temperature: 50° to 95° F (10° to 35° C)
Storage temperature: -4° to 116° F (-20° to 47° C)
Relative humidity: 5% to 95% noncondensing
Maximum altitude: 10,000 feet
Typical acoustical performance
Sound pressure level (operator position): 18 dBA at idle
 
Environmental Status Report
iMac is designed with the following features to reduce its environmental impact:
Arsenic-free display glass
BFR-free
PVC-free
Mercury-free LED-backlit display
Highly recyclable aluminum and glass enclosures
Meets ENERGY STAR 5.2 requirements
Rated EPEAT Gold