Adamanta 16GB (2x8GB) Apple Memory Upgrade DDR3L 1600MHz SODIMM Compatible for iMac (Mid 2011, Late 2012, Early/Late 2013, Late 2014, Mid 2015) 2Rx8 CL11 1.35v RAM at Amazon.com
Mid 2011 iMac 27'' won't boot - 3 beeps and maxed fans - Ask Different
MacBook Air Beeps 3 Times Repair McKinney – iFixhut Apple Mac Computer Service North Dallas Plano ,Allen , frisco ,McKinney Texas
iMac 21.5” 1 Beep On Start up Fix - YouTube
Beeping Sound After Upgrading RAM on Mac Mini Fix - Instructables
How to fix beeping Mac mini (2009), not detecting RAM. | MacRumors Forums
What to do when your iMac won't turn on?
Amazon.com: Timetec 8GB KIT(2x4GB) Compatible for Apple DDR3 1333MHz PC3-10600 for Mac Book Pro (Early/Late 2011 13/15/17 inch), iMac (Mid 2010, Mid/Late 2011 21.5/27 inch), Mac Mini(Mid 2011) RAM Upgrade : Electronics
This is an iMac g3, and when I power it on, it just makes 4 beeps and nothing more (no image, but I can hear the HDD and the fan) Any ideas
MacMini 2012 beeping 3 times after RAM upgrade : r/mac
imac - Getting 3 beeps on restart after RAM install... is the RAM really bad? - Ask Different
5 Symptoms of a RAM Problem and How to Fix It - TurboFuture