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All-in-One · 2011ObsoleteUncommon · 55
iMac 21.5″ (Mid 2011)
A1311 · Unibody iMac (2009-2011)
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Start your collectionIdentifiers
| Order number | A1311 |
| Machine ID | iMac12,1 |
Reference
| Original price | $1,199 |
| Announced | 2011-05-03 |
| Discontinued | 2012-10-23 |
| Max supported OS | macOS 10.13 High Sierra |
| Design era | Unibody iMac (2009-2011) |
Configurations
| Colors | Anodized aluminum |
| CPU | Intel Core i5-2400S @ 2.5 GHz, Intel Core i5-2500S @ 2.7 GHz, Intel Core i7-2600S @ 2.8 GHz |
| Memory | 4 GB, 8 GB, 16 GB (max) |
| Storage | 500 GB SATA HDD, 1 TB SATA HDD |
| Graphics | AMD Radeon HD 6750M (512 MB), AMD Radeon HD 6770M (512 MB) |
| Display | 21.5″ LED (1920×1080) |
| Operating system | Mac OS X 10.6 Snow Leopard, Mac OS X 10.6.1, Mac OS X 10.6.2, Mac OS X 10.6.3, Mac OS X 10.6.4, Mac OS X 10.6.5, Mac OS X 10.6.6, Mac OS X 10.6.7, Mac OS X 10.6.8, Mac OS X 10.7 Lion, Mac OS X 10.7.1, Mac OS X 10.7.2, Mac OS X 10.7.3, Mac OS X 10.7.4, Mac OS X 10.7.5, OS X 10.8 Mountain Lion, OS X 10.8.1, OS X 10.8.2, OS X 10.8.3, OS X 10.8.4, OS X 10.8.5, OS X 10.9 Mavericks, OS X 10.9.1, OS X 10.9.2, OS X 10.9.3, OS X 10.9.4, OS X 10.9.5, OS X 10.10 Yosemite, OS X 10.10.1, OS X 10.10.2, OS X 10.10.3, OS X 10.10.4, OS X 10.10.5, OS X 10.11 El Capitan, OS X 10.11.1, OS X 10.11.2, OS X 10.11.3, OS X 10.11.4, OS X 10.11.5, OS X 10.11.6, macOS 10.12 Sierra, macOS 10.12.1, macOS 10.12.2, macOS 10.12.3, macOS 10.12.4, macOS 10.12.5, macOS 10.12.6, macOS 10.13 High Sierra, macOS 10.13.1, macOS 10.13.2, macOS 10.13.3, macOS 10.13.4, macOS 10.13.5, macOS 10.13.6 |
| Removable media | SuperDrive (DVD±R DL, slot-loading) |
Physical
| Ports & connectivity | 4× USB 2.0 · 1× FireWire 800 · 2× Thunderbolt · 10/100/1000 Ethernet · 3.5mm headphone · 3.5mm audio in · SDXC card slot · Built-in FaceTime HD |
| Dimensions (W×H×D) | 528 × 450 × 189 mm |
| Weight | 9.3 kg |
Known quirks
- First iMac with Thunderbolt — replaced Mini DisplayPort
- Sandy Bridge quad-core i5 was huge performance boost
- Radeon HD 6770M had widespread GPU failures — Apple's repair program covered through 2017
- Still uses laptop HDDs inside — third-party swaps awkward