iMac 21.5" (Mid 2011): release date, model numbers and price

Q: When did the iMac 21.5" (Mid 2011) come out?

Apple released the iMac 21.5" (Mid 2011) on May 3, 2011, 15 years ago at $1,199.

Apple released the iMac 21.5" (Mid 2011) on May 3, 2011, 15 years ago at $1,199. Its model number is A1311 (identifier iMac12,1). Apple stopped selling it on October 23, 2012. It gets updates up to macOS 10.13 (High Sierra). Refurbished, it costs from $189 today, 84% below launch.

Updated October 28, 2026. Release date and launch price from Apple. Refurbished prices checked daily at Mac of All Trades, Amazon, Back Market, Gazelle, Apple Store, MacSales.com, eBay, Loop Mobile, and MacPro-LA.

Released: May 3, 2011 15 years ago
Launch price: $1,199 For the 256GB model
Discontinued: October 23, 2012 539 days on sale
Latest software: macOS 10.13 (High Sierra)
Model number: A1311 Identifier iMac12,1
Storage: 256GB, 500GB, 1TB, 2TB
Colors: Silver
First refurbished: June 25, 2011 Apple Store, 54 days after launch

Refurbished iMac 21.5" (Mid 2011) prices

Today's cheapest refurbished offer for each configuration, with the lowest price RefurbMe has recorded below it.

Color

256GB

500GB

1TB

2TB

Silver 1 of 4 in stock

Alert me lowest seen $427 Cheapest $189 lowest seen $129 See deals Alert me lowest seen $219 Alert me lowest seen $249

1 of 4 configurations in stock. Grade and battery vary by offer; the deals page lists every one.

Where to buy a refurbished iMac 21.5" (Mid 2011)

Every refurbisher that has sold the iMac 21.5" (Mid 2011), cheapest today first. Listings counts the offers each one has live, one per version and grade, not how many devices it holds.

Refurbisher	Cheapest today	Listings	Lowest seen	First sold refurbished	Offers
eBay 1 listing	$189	1	$189	Jun 26, 2026 (5534 days)	See offers
Mac of All Trades 0 listings	Sold out	0	$129	Sep 1, 2016 (1949 days)	Get an alert
Back Market 0 listings	Sold out	0	$189	Jul 12, 2018 (2627 days)	Get an alert
Amazon 0 listings	Sold out	0	$300	Aug 20, 2018 (2666 days)	Get an alert
Apple Store 0 listings	Sold out	0	$799	Jun 25, 2011 (54 days)	Get an alert

The iMac 21.5" (Mid 2011) so far

Launched 15 years ago.

ReleasedMay 3, 2011
$1,199 at launch First refurbishedJun 25, 2011
Apple Store, after 54 days DiscontinuedOct 23, 2012
539 days on sale TodayOct 28, 2026
from $189, 84% below launch

Released, May 3, 2011$1,199 at launch
First refurbished, Jun 25, 2011Apple Store, after 54 days
Discontinued, Oct 23, 2012539 days on sale
Today, Oct 28, 2026from $189, 84% below launch

Every iMac 21.5" (Mid 2011) part number

2 part numbers in the US, one per configuration. You'll find yours on the back of the box and in the device's settings, next to the model number.

Part number	Model	Version	Today	Lowest seen
256GB6 part numbers
`MC812` custom	A1311	SSD · Silver · 2.7Ghz Intel Quad-Core i5 2nd gen · 16GB	none
`MC812` custom	A1311	SSD · Silver · 2.7Ghz Intel Quad-Core i5 2nd gen · 4GB	none
`MC812` custom	A1311	SSD · Silver · 2.7Ghz Intel Quad-Core i5 2nd gen · 8GB	none	$427
`MC812` custom	A1311	SSD · Silver · 2.8Ghz Intel Quad-Core i7 2nd gen · 16GB	none
`MC812` custom	A1311	SSD · Silver · 2.8Ghz Intel Quad-Core i7 2nd gen · 4GB	none
`MC812` custom	A1311	SSD · Silver · 2.8Ghz Intel Quad-Core i7 2nd gen · 8GB	none	$799
500GB2 part numbers · from $189
`MC309` custom	A1311	Hard Drive · Silver · 2.5Ghz Intel Quad-Core i5 2nd gen · 4GB	$189	$129
`MC309` custom	A1311	Hard Drive · Silver · 2.5Ghz Intel Quad-Core i5 2nd gen · 8GB	none	$139
1TB6 part numbers
`MC812` custom	A1311	Hard Drive · Silver · 2.7Ghz Intel Quad-Core i5 2nd gen · 16GB	none	$250
`MC812` custom	A1311	Hard Drive · Silver · 2.7Ghz Intel Quad-Core i5 2nd gen · 4GB	none	$299
`MC812` custom	A1311	Hard Drive · Silver · 2.7Ghz Intel Quad-Core i5 2nd gen · 8GB	none	$219
`MC812` custom	A1311	Hard Drive · Silver · 2.8Ghz Intel Quad-Core i7 2nd gen · 16GB	none	$299
`MC812` custom	A1311	Hard Drive · Silver · 2.8Ghz Intel Quad-Core i7 2nd gen · 4GB	none	$259
`MC812` custom	A1311	Hard Drive · Silver · 2.8Ghz Intel Quad-Core i7 2nd gen · 8GB	none	$272
2TB6 part numbers
`MC812` custom	A1311	Hard Drive · Silver · 2.7Ghz Intel Quad-Core i5 2nd gen · 16GB	none	$289
`MC812` custom	A1311	Hard Drive · Silver · 2.7Ghz Intel Quad-Core i5 2nd gen · 4GB	none
`MC812` custom	A1311	Hard Drive · Silver · 2.7Ghz Intel Quad-Core i5 2nd gen · 8GB	none	$249
`MC812` custom	A1311	Hard Drive · Silver · 2.8Ghz Intel Quad-Core i7 2nd gen · 16GB	none
`MC812` custom	A1311	Hard Drive · Silver · 2.8Ghz Intel Quad-Core i7 2nd gen · 4GB	none
`MC812` custom	A1311	Hard Drive · Silver · 2.8Ghz Intel Quad-Core i7 2nd gen · 8GB	none	$499

iMac 21.5" (Mid 2011) questions

When did the iMac 21.5" (Mid 2011) come out?

Apple released the iMac 21.5" (Mid 2011) on May 3, 2011, 15 years ago at $1,199.

How much did the iMac 21.5" (Mid 2011) cost at launch?

$1,199 for the base model. Refurbished, it costs from $189 today.

What is the iMac 21.5" (Mid 2011) model number?

Its model number is A1311 (identifier iMac12,1). The model number starts with A. It is printed on the device or its box, and most devices also show it in their settings.

Is the iMac 21.5" (Mid 2011) still supported?

It gets updates up to macOS 10.13 (High Sierra); newer models run later versions.

When was the iMac 21.5" (Mid 2011) discontinued?

Apple stopped selling it on October 23, 2012. Refurbishers still sell it.

How much is a refurbished iMac 21.5" (Mid 2011)?

From $189 today. The lowest price RefurbMe has seen is $129.

How we get these numbers

Release dates, launch prices and model numbers come from Apple. Every day RefurbMe checks the stock and prices of Mac of All Trades, Amazon, Back Market, Gazelle, Apple Store, MacSales.com, eBay, Loop Mobile, and MacPro-LA and keeps every price it sees, which is where the lowest price seen comes from. The cheapest price today is the lowest in stock at our last check; it can change between that check and your visit.

Other iMac models from 2011

iMac 27" • Mid 2011

All iMac release dates