Logic Board for PowerBook G4 Onyx 550 Out of Stock This logic board can be used to replace one found in Titanium Onyx PowerBook G4s 550/667(VGA) MHz. Return to item list    Currently out of stock.        $1500 $1599 $1650 $1747.88 $1748.99   100% free eBay sniper collaborative art learn to read chinese great deals on books by the best authors