How to Upgrade MacBook Pro RAM (2009, 2010, 2011, 2012): EveryMac.com
SOLVED: Upgrading Memory on MacBook Air 2011 11 inch Model - MacBook Air 11" Mid 2011 - iFixit
Apple MacBook Air review (13-inch, mid 2011) - The Verge
SOLVED: Upgrading Memory on MacBook Air 2011 11 inch Model - MacBook Air 11" Mid 2011 - iFixit
How to Upgrade MacBook Pro RAM (2009, 2010, 2011, 2012): EveryMac.com
Can I upgrade the RAM on my 11' MacBook Air Mid 2011? I saw the specs mentioned that '2GB or 4GB of 1333MHz DDR3 onboard memory,” does it mean it cannot be
Apple MacBook Pro Late 2011 8GB Memory & SSD Upgrade - YouTube