DDR3 and DDR4 Laptop Memory Compatible? No. – Laptoping
What is the difference between DDR3 and DDR4 RAM?
OWC 4GB PC8500 DDR3 1066MHz SO-DIMM Memory Compatible with Early 2009, Early 2010 MacBook, MacBook Pro Unibody Models, 2009/2010 Mac Mini, and 2009 iMac Models at Amazon.com