Work exactly as expected for my iMac 27" model from 2017.

Works well and as expected.

Worked as expected and fully compatible with my iMac (Retina 5K, 27-inch, 2017, Intel Core i5-7500 3400 MHz (4 cores))

It works as expected, every time

The laptop went into dual channel mode once installed and the RAM performs well and as expected

Works as expected on my 2017 27" iMac Retina 5k