iMac 21.5" (Mid 2011): release date, model numbers and price
Apple released the iMac 21.5" (Mid 2011) on 3 May 2011, 15 years ago. Its model number is A1311 (identifier iMac12,1). Apple stopped selling it on 23 October 2012. It gets updates up to macOS 10.13 (High Sierra). Refurbished, it costs from £168 today.
Updated 28 October 2026. Release date and launch price from Apple. Refurbished prices checked daily at Apple Store, Amazon, Back Market, MusicMagpie, eBay, TLX, Loop Mobile, Reboxed, Tech Trade, and Grade Mobile.
- Released
- 3 May 2011 15 years ago
- Discontinued
- 23 October 2012 539 days on sale
- Latest software
- macOS 10.13 (High Sierra)
- Model number
- A1311 Identifier iMac12,1
- Storage
- 500GB, 1TB
- Colors
- Silver
- First refurbished
- 8 July 2011 Apple Store, 66 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.
Silver 1 of 2 in stockWhere 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 | Offers |
|---|---|---|
 eBay 1 listing | £168 | See offers |
 Back Market 0 listings | Sold out | Get an alert |
 Amazon 0 listings | Sold out | Get an alert |
 Apple Store 0 listings | Sold out | Get an alert |
The iMac 21.5" (Mid 2011) so far
Launched 15 years ago.
First refurbished8 Jul 2011
Apple Store, after 66 days Discontinued23 Oct 2012
539 days on sale Today28 Oct 2026
from £168
- Released, 3 May 2011
- First refurbished, 8 Jul 2011Apple Store, after 66 days
- Discontinued, 23 Oct 2012539 days on sale
- Today, 28 Oct 2026from £168
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 3 May 2011, 15 years ago.
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 23 October 2012. Refurbishers still sell it.
How much is a refurbished iMac 21.5" (Mid 2011)?
From £168 today. The lowest price RefurbMe has seen is £60.
How we get these numbers
Release dates, launch prices and model numbers come from Apple. Every day RefurbMe checks the stock and prices of Apple Store, Amazon, Back Market, MusicMagpie, eBay, TLX, Loop Mobile, Reboxed, Tech Trade, and Grade Mobile 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.