Identify your iMac model - Apple Support
Identify your MacBook Pro model - Apple Support (NZ)
Need some help (Mid 2009 MacBook Pro) : r/mac
Latest macOS compatibility chart : r/MacOS
Upgrade to latest OS on Macbook Pro Mid 2009 | MacRumors Forums
Identify your MacBook Air model - Apple Support (CA)
Replace OS on an older MacBook Pro - Apple Community
256GB 2.5 SSD | OS X El Capitan 10.11.6 Loaded | MACBOOK PRO 2009 2010 2011 2012 | eBay
The macOS Sierra Compatibility List
PSA: macOS Sierra drops support for many Macs from 2007, 2008, and 2009 | Ars Technica
macOS compatibility: What macOS versions can my Mac run? | Macworld
MacOS High Sierra Compatible Macs List | OSXDaily
macos - Mac Pro 4,1 (Early 2009) Sierra Compatibility? - Ask Different
Identify your MacBook Pro model - Apple Support
Apple macOS Sierra: how about that compatibility list? (2023)
Identify your iMac model – Apple Support (UK)
macOS compatibility: What macOS versions can my Mac run? | Macworld
macOS compatibility: What macOS versions can my Mac run? | Macworld
OpenCore Legacy Patcher
Apple MacBook Pro A1286 C2D-2.8GHZ 4GB 256GB SSD Nvidia 2009 El Capitan AU25-10 | eBay
Identify your MacBook Pro model - Apple Support (IE)
Mac OS X Netbook Compatibility Chart | Edible Apple
Unibody MacBook Pro Mac OS X and Windows Compatibility: EveryMac.com
MacBook 6,1 (13-Inch, Late 2009) - Full Information | iGotOffer
