iMac RAM expansion compatibility I have an Apple iMac (Retina 5K, 27-inch, 2017) with 8GB RAM and I would like to expand the memory to 16 GB. I have found the following ram on line (Newegg)and I would like to know if is it compatible and you would recommend it. I live in Bahrain:

Crucial 16GB Kit (8GBx2) DDR4 2400 MT/s (PC4-19200) 260-Pin SODIMM Memory - CT2K8G4SFS824A
Apple has a support document explaining this, see https://support.apple.com/en-us/HT201191#27inch2017 for your model: