Thanks for the suggestions. Using F12, both slots/banks were recognizing the RAM, but it was at 16GB each. Not sure why, but I decided to do some swapping around to see if anything worked. I checked each stick of RAM individually and they both seemed to work at a full 32GB. I then tried each stick in the second spot/bank and they both again worked at a full 32GB. I randomly chose one stick of RAM, installed it into the first bank then restarted my computer to check it was working at 32GB. Next, I shut down and installed the second stick into the second spot, and restarted. This time, I received a message that the amount of RAM has changed before booting up, and now it's 64GB. No idea what happened, but it's working now.  
After updating the RAM from 32GB to 64GB, the computer is only showing 32GB. Is this a BIOS issue? I am currently running BIOS version 1.27.0. Using a 3rd party app Speccy I can see that it shows 64GB was installed, but for some reason, it's not being recognized properly. Please let me know if there is an easy way to fix this. 
Dell Precision 5530 64GB RAM upgrade showing only as 32GB