HP 8GB DDR4 SDRAM Memory Module - 8 GB - DDR4 SDRAM - 2666 MHz DDR4-2666/PC4-21333 - ECC at Amazon.com
RMSA3300ME78HBF-2666 16gb Pc4 2666MHz DDR4 So-Dimm Non-ECC 260 pin 1.2V Ram Memory for Laptop and All in One Desktop Computer (16gb Pc4 2666MHz DDR4 So-Dimm) at Amazon.com
Amazon.com: Crucial 16GB Single DDR4 2666 MT/s (PC4-21300) DR x8 DIMM 288-Pin Memory - CT16G4DFD8266 : Everything Else
Amazon.com: Crucial 16GB Single DDR4 2666 MT/s (PC4-21300) DR x8 DIMM 288-Pin Memory - CT16G4DFD8266 : Everything Else
Amazon.com: Corsair Vengeance LPX 16GB (2x8GB) DDR4 DRAM 2666MHz (PC4-21300) C16 Memory Kit - Black : Everything Else
Timetec 32GB KIT(2x16GB) Compatible for Apple DDR4 2666MHz / 2667MHz for Mid 2020 iMac (20,1/20,2) / Mid 2019 iMac (19,1) 27-inch w/Retina 5K, Late 2018 Mac Mini (8,1) PC4-21333 /PC4-21300 MAC RAM at Amazon.com