My 2004 17" PowerBook G4. Believe it or not this is still my main laptop and I use it daily : r/mac
MacBook Air 16GB RAM Upgrade - YouTube
My new PowerBook G4 12-inch! Any suggestions as to what I could do with it? : r/VintageApple
How to upgrade RAM in your Apple iBook G4 - YouTube
17-inch PowerBook G4 "Aluminum" Memory Installation Video - YouTube
Maybe Little bit vintage for Reddit but Mac OS 9 on my powerbook G4 12inch ,it boots but the sleep mode function doesn't work and I can't change it anymore than 256