It's old as heck but still kicking! Mid 2009 MacBook Pro (MacBook Pro 5,5) I'm hoping to use opencore legacy patcher to install Monterey on it. : r/ macbookpro
MacBook Pro (13-inch, Mid 2009)
Monterey on Mid 2009 MacBook 5,2. : r/BigSurPatcher
15″ MacBook Pro (Mid 2009) | Low End Mac
MacBook Pro 13" Unibody Mid 2009 Repair - iFixit
Apple MacBook Pro Laptop | Mid 2009 - REFURBISHED - Techmarket