8GB (2X 4GB) Memory for Apple iMac 27" 2017 5K Retina Display DDR4 PC4 2400 RAM | eBay
New 4GB/8GB DDR3 RAM – Epic Repair
Amazon.com: A-Tech 8GB (2 x 4GB) RAM for HP Pavilion DV6-1230US | DDR2 800MHz SODIMM PC2-6400 200-Pin Non-ECC Memory Upgrade Kit : Electronics
OWC 8GB (2 x 4GB) PC12800 DDR3L 1600MHz SO-DIMMs Memory Compatible with 2011-2015 iMac, 2011-12 Mac Mini, and 2011-2012 MacBook Pro (Non-Retina Display) Models (OWC1600DDR3S08S) at Amazon.com