Monterey on Mid 2009 MacBook 5,2. : r/BigSurPatcher
MacBook (2006–2012) - Wikipedia
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 (:
Apple MacBook 2130/13.3 ホワイト MC240J/A オークション比較 - 価格.com