16GB 2 x 8GB PC4-23400R RDIMM DDR4 2933Y Memory RAM for APPLE MAC PRO 2019 A1991 | eBay
Transcend Information DDR3 1600 SO-DIMM 4GB 11-11-11 1Rx8 at Amazon.com
Corsair Mac Memory — 8GB DDR3 SODIMM Memory Kit
Timetec 8GB Compatible for Apple DDR3 1067MHz / 1066MHz PC3-8500 for Mac Book (Mid 2010 13-inch), Mac Book Pro (Mid 2010 13-inch), iMac (Late 2009 27-inch), Mac Mini (Mid 2010) SODIMM MAC
A-Tech 16GB Kit (2x8GB) ECC UDIMM Memory for Apple Mac Pro Late 2013 (MacPro6,1) | DDR3 1866 MHz ECC Unbuffered DIMM PC3-14900 Dual Rank 2Rx8 1.5V 240 Pin RAM Upgrade Modules at Amazon.com