How to upgrade RAM memory in MacBook A1181, A1185 laptop - YouTube
CMS 2GB (1X2GB) DDR2 5300 667MHZ NON ECC SODIMM Memory Ram Compatible with Apple Macbook Pro 13.3" 2.2Ghz MB062Ll/B A1181, 2200 - A38 - Walmart.com
4GB Memory for Apple MacBook and MacBook Pro Mid/Late 2007 Early 2008 Ram A1226 A1229 A1181 MA897LL/A MA896LL MA895LL MC240LL/A MB881LL/A MB404LL/A MB403LL/A MB402LL/A MB063LL/B MB062LL/B MB061LL/B at Amazon.com
How to Upgrade MacBook RAM: White/Black, A1181: EveryMac.com
Got my A1181 09' MacBook 5,2 running a 500GB SSD, 4GB Ram, and pushed it from the max OS of El Capitan to Mojave with a patched install USB I put together (:
MacBook Core 2 Duo RAM Replacement - iFixit Repair Guide