RAM Upgrades For Apple MacBook (2009 - 2010) from OWC
How to Upgrade MacBook Pro RAM, Early 2009, 17-Inch: EveryMac.com
Refurbished | Apple MacBook Pro Laptop | 13.3-inch | 4GB RAM | Mac OS | 500GB HDD | Bundle: Black Case, Wireless Mouse, Bluetooth/Wireless Airbuds By Certified 2 Day Express - Walmart.com
Apple MacBook Pro 5.5 Mid 2009 13.3" A1278, Core 2 Duo, 240GB SSD, 8GB RAM | eBay
A-Tech 8GB (2 x 4GB) PC3-8500 DDR3 1066/1067 MHz RAM for MacBook, MacBook Pro, iMac, Mac Mini (Late 2008, Early/Mid/Late 2009, Mid 2010) | 204-Pin SODIMM Memory Kit at Amazon.com