Operating system: Mac OS 10.15, Catalina
Memory: 16GB memory upgrade (two 8GB) 1600MHz DDR3 memory
Storage: 256GB SSD Flash Storage

Optical drive: None
Graphics: Intel® Iris Pro graphics

Processor: Intel® Core™ i5 (2.9 GHz base frequency, up to 3.6GHz with Intel® Turbo Boost Technology,  6MB L3 cache, 4 cores)

Display: 21.5 inches (54.61 cm) diagonal LED-backlit display with IPS technology; 1920-by-1080 resolution with support for millions of colors

Audio features:

• Stereo speakers
• Dual microphones
• Headphone port
  • Headphone/optical digital audio output (minijack)
  • Support for Apple iPhone headset with microphone

Integrated Webcam:

• 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
• Support for Target Display Mode via the Thunderbolt port using a Thunderbolt to Thunderbolt cable (sold separately)
• Line voltage: 100-240V AC
• Frequency: 50Hz to 60Hz, single phase
• Operating temperature: 50° to 95° F (10° to 35° C)
• Relative humidity: 5% to 95% noncondensing
• Operating altitude: tested up to 10,000 feet

Product type: Apple iMac (21.5-inch, Late 2013) All-in-ones
Product colour: Natural silver

Dimensions (W x D x H): 52.8 cm x 17.5 cm x 45.0 cm
Weight: 5.68 kg ( 12.5 lbs)