Mac OS X Snow Leopard - Wikipedia
Mid-2009 Apple MacBook Pro 13" - 120GB SSD / 4GB RAM - 2.53GHz Core2Duo Laptop 885909296545 | eBay
Identify your MacBook model - Apple Support
macOS Sierra | Low End Mac
Monterey on Mid 2009 MacBook 5,2. : r/BigSurPatcher
How to Upgrade the Firmware of a 2009 Mac Pro 4,1 - iFixit Repair Guide
How to Upgrade Mac to macOS High Sierra | Trend Micro News
Seven years on, a MacBook Pro prepares for El Capitan – Six Colors
MacBook Pro 13" A1278 Mid 2009 2.26Ghz 500GB HDD 6GB RAM OS X El Capitan | eBay
Identify your MacBook Pro model - Apple Support
Identify your MacBook model - Apple Support
Identify your MacBook Pro model - Apple Support
OS X El Capitan review: A modest update, with some welcome changes | Engadget
MacBook Pro mid-2009 ... please help me pimp it up!! | MacRumors Forums
Mac OS X El Capitan (10.11) BETA - Late 2009 Unibody Macbook! - YouTube
OS X temp unavaliable? 2009 Macbook Pro - Apple Community
