Free Shipping available on most orders $49.00 & up.

Get Details. »

We're sorry, but this item is no longer for sale. However, there may be more New & Pre-Owned Apple Mac items available.

Our selection of available New & Pre-Owned Macs is constantly changing. We highlight many of the best deals on our Specials Page, or you can view our full inventory of new, refurbished and OWC certified systems.

Apple 21.5-inch iMac:

8GB Memory | 500GB Storage

2.5GHz Quad-Core Intel Core i5 Processor

MC309LL/A (Mid 2011)

Used, Excellent condition
System Configuration:
  • Memory:
    • 8GB PC10600 1333 MHz DDR3
  • Storage:
    • 500GB 7,200RPM hard disk drive
  • Optical Drive:
    • Slot-loading 8X DL "SuperDrive" with double layer support
  • Networking:
    • Built-in 802.11a/b/g/n Wi-Fi
    • Built-in 10/100/1000BASE-T Gigabit Ethernet
    • Built-in Bluetooth 2.1 + EDR
    • 1 x Thunderbolt Port
  • Video:
    • 21.5" (diagonal) LED-backlit glossy display with IPS and TFT technology and 1920 by 1080 resolution
    • AMD Radeon HD 6750M with 256MB VRAM
  • Pre-Loaded/Licensed Software:
    • Pre-loaded with macOS 10.12 Sierra
OWC Tested. Quality You Can Trust.
OWC individually inspects and fully tests every pre-owned computer to confirm full functionality and accurate grading. All refurbishments and/or upgrades are performed by our Apple Certified Technicians. That's why OWC is the most trusted name in Mac refurbishments.
Experience huge savings on iMac!
Any iteration of iMac is a fantastic all-in-one machine, and when purchased through MacSales.com, you can count on all the horsepower at a fraction of the price of buying new. Add this 2011 iMac to your workflow at dramatic savings!
Powered by a 2.5GHz Intel Core i5 Sandy Bridge Processor (4 Total Cores)
Talk about oomph. This baby has some power and then some. More processor cores equals more tasks and projects you can do at once. And with a Turbo Boost up to 3.3, you will definitely have enough power for years to come without feeling like your processors are holding you back.
8GB of Memory
This iMac is champing at the bit to get to work. With 8GB of memory you can multi-task with efficiency and experience less lag time with launching and saving applications. If you need more memory, you can expand to 32.0 GB with this model iMac.
500GB 7,200RPM Hard Drive
This machine comes with a 500GB 7,200RPM hard drive, which is a great starting point for any machine. A hard drive is a great economical way to add and store tons of data to archive or work from.
Apple SuperDrive
Optical drives? Yup. People still use these to create movies, economically store archived works, and more! This Apple SuperDrive is at the ready should any DVD or CD optical storage need arise.
Gigabit Ethernet, Wi-Fi, and Bluetooth Networking
This iMac, in addition to the one RJ-45 port that supports 10/100/1000BASE-Tnetworks, also has a Bluetooth 2.1 + EDR and 802.11a/b/g/n Wi-Fi card installed. So you're covered for all your wired and wireless connection needs.

Includes

  • Apple iMac (21.5-inch, Mid 2011)
  • power cord
  • Pre-loaded with macOS 10.12 Sierra
Software restore disks, keyboard, and mouse not included

Machine Specifications

Apple iMac Intel 2.5 GHz (21.5-inch, Quad-Core i5, "Sandy Bridge") - Mid 2011*
Model ID: iMac12,1 View how to find model ID
This Mac supports operating system version 10.6.6 through Current.

Processor / Memory

  • 2.5GHz Quad-Core Intel Core i5 Processor
    • Turbo Boost up to 3.3GHz
    • 6MB on-chip shared L3 cache
  • Memory (RAM): Equiped with 8GB , maximum 32.0 GB supported
  • 1333 MHz DDR3 SO-DIMM PC10600 memory
  • Four memory slots

Internal Drives

  • SATA 6.0Gb/s Storage Bus
  • 3.5-inch Storage Bay
    • 500GB 7,200RPM hard disk drive
  • One 2.5-inch SSD Drive Port
    • Empty
  • SATA 3.0Gb/s Optical Drive Bus
  • Slot-loading 8X DL "SuperDrive" with double layer support
    Maximum write: 8x DVD-R, DVD+R; 4x DVD-R DL (double layer), DVD+R DL (double layer), DVD-RW, DVD+RW; 24x CD-R; 16x CD-RW
    Maximum read: 8x DVD-R, DVD+R, DVD-ROM; DVD-ROM (double layer DVD-9), DVD-R DL (double layer), DVD+R DL (double layer), DVD-RW, DVD+RW; 24x CD

Ports

  • Headphone/optical digital audio output (minijack)
  • SDXC card slot
  • Four USB 2 ports
  • One FireWire 800 port
  • One Thunderbolt port
  • 10/100/1000BASE-T Ethernet (RJ-45 connector)

Power

  • 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: -40° to 116° F (-40° to 47° C)
  • Relative humidity: 5% to 95% noncondensing
  • Maximum operating altitude: 10,000 feet

Network

  • 10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector)
  • Built-in 802.11a/b/g/n Wi-Fi wireless networking
  • Bluetooth 2.1 + EDR wireless technology

Sound

  • Built-in stereo speakers
  • Two internal 20-watt high-efficiency amplifiers
  • Headphone/optical digital audio output (minijack)
  • Headphone port
    • Audio line in/optical digital audio input (minijack)
    • Support for Apple Earphones with Mic
  • Built-in microphone

Display / Monitor Capability

  • 21.5-inch (viewable) LED-backlit glossy widescreen TFT active-matrix liquid crystal display with IPS technology
  • 1920 by 1080 resolution with support for color
  • 16:9 aspect ratio
  • Typical viewing angle: 178° horizontal; 178° vertical
  • Can be attached to a wall mount, articulating arm, or other VESA-compliant mounting solution using the NewerTech NuMount VESA Adapter for iMac

Graphics / Video

  • AMD Radeon HD 6750M graphics processor with 256MB of dedicated GDDR5 memory
  • Built-in 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 dual display extended, video mirroring, AirPlay Mirroring, and Target Display

Keyboard / Mouse

  • Keyboard not included
  • Mouse not included

Dimensions / Weight

Height: 17.75" (45.09cm)
Width: 20.80" (52.83cm)
Depth: 7.42" (18.85cm)
Weight: 20.5lb. (9.3kg)

Excellent Condition

Excellent Condition:
These units have been well cared for. They may have a small ding, scuff, or scratch form general use, but otherwise they’re in great condition. Any pixel anomalies are within manufacturer guidelines for a new system. Images shown are examples from actual units but exact unit condition will vary.

Warranty

The best warranty is one you never have to use - but should the need occur - we're proud to provide a superior level of support and service coverage to our customers.

Apple 21.5-inch iMac

90 Day OWC Fulfilled Limited Warranty
Other World Computing (OWC) fully inspects and tests each pre-owned Mac for the full functionality as listed and offers a limited parts and labor warranty to the original purchaser that this iMac will be free from defects in material and workmanship for a period of 90 days from the original date of purchase.

14 Day Money-Back Return Policy

If you change your mind or determine this isn't the right Apple for you, you may contact OWC within 14 days of the original invoice date to request a return of this item for refund. See the full Return Policy for Used Macs and Factory Sealed Systems for more details.

Customer Ratings

Write a Review 5 / 5 1 out of 1 (100%) reviewers would recommend this product
Verified Buyer
Reviewer: Subbie Location: Chandler, AZ Age: 55-65 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 iMac Quad-Core i5 July 6, 2017 I had a previous model of iMac and I wanted to upgrade to an i5. I found this one that was in excellent condition. I'm a major Mac fan and so I was so happy when it arrived with absolutely no marks on it at all. I buy parts and other stuff from MacSales quite ofter and always fine what I need. I also purchased an external 1TB external drive to use for my backup. I'm a happy computer user.

I would recommend this item to a friend! Customer Videos:

Verified Buyer
Reviewer: Anonymous Location: NC Age: 45-54 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 21.5 IMAC 2011 Used / Very good condition July 10, 2015 This is the second IMAC I have bought from OWC. One for my son and then later one for me. They work excellent and fit into our budget. Installed my Adobe software and got to work.

Thanks OWC.

I would recommend this item to a friend! This review is from Apple 21.5" iMac (2011) 2.5GHz Quad Core i5 - Used, Excellent condition.

Verified Buyer
Reviewer: Anonymous Location: Wyoming Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Quality and exactly as described. August 29, 2014 I would recommend this item to a friend! This review is from Apple 21.5" iMac (2011) 2.8GHz Quad Core i7 - Used, Excellent condition.
Apple 21.5-inch iMac 2.5GHz Quad-Core Intel Core i5 Processor Mfr P/N: MC309LL/A OWC SKU: UABH1F79OBX1XXB Used, Excellent condition 90 Day OWC Fulfilled Limited Warranty Sold Out