Crucial DDR4 RAM

The Crucial RAM 16GB Kit (2x8GB) DDR4 2666 MHz CL19 Memory for Mac CT2K8G4S266M is a reliable and compatible option for users who wish to expand their RAM. One of the frequently asked questions is whether this RAM can be mixed with Apple's pre-installed RAM, and the answer is yes. Users can insert this RAM in the slots containing the Apple RAM, making sure that the newer and larger RAM modules are used first. Another FAQ asks whether this product is the same as CT10559857 on crucial.com. The response confirms that the items are the same part. One user is inquiring if they could add another 32GB to their imac retina 5k, 27-inch, 2017. The response is positive but mentions that 2017 models which use the 3.4GHz i5 processor are limited to 32GB, while the 3.5GHz and 3.8GHz models can reach 64GB. Another user is asking about the difference between single and dual rank; the recommendation is to match the stock memory type, although it seems to be a non-issue as the majority of clients did not encounter any problem, whether they went for dual ranked or not. Multiple reviews indicate that the product is easy to install and is compatible with their devices. One user adds that installation is simple by following the product page's instructional video. According to another user who upgraded from the stock 16GB, the upgrade works perfectly. One user installed the RAM on their OPNsense router and had no issues, while another user was happy with the price and noticed that the RAM improved the system's overall speed. However, one user had a problem with the product, and their computer did not turn on with it in, causing them to look for a refund or replacement.