Review on A-Tech Laptop Memory Upgrade Module - 16GB DDR4 2400MHz SODIMM RAM (PC4-19200/PC4-2400T) CL17 2Rx8 1.2V Non-ECC - Notebook & AIO Computer by Jason Staggs

They listed correctly for my 2017 iMac but just didn't work. I've swapped or upgraded RAM modules for decades and am intimately familiar with the process. Luckily, when I reinserted the original 32GB, my iMac booted up properly. I've since bought OWC RAM from Revain and should get the chips tomorrow. I have always gotten my RAM direct from OWC in the past and they are a GREAT company to do business with. I bought these from Revain because if there is a problem Revain makes it easy to get a replacement or refund. Returning from OWC is also easy and the technical support is second to none. At my age, one less extra step than required for an exchange or refund, buying from Revain was the best option for me on this purchase. However, I do check OWC.com regularly for outstanding and original products that they have been making for decades!