According to the Timetec spec sheet that will work. Generally Crucial is the most compatible RAM for Dell, BUT having said that I used Timetec RAM for my Latitude E6420 and it works like a charm. On the question page from that Amazon product page I found this: Q: Is this compatible with the Dell Optiplex 9020A: Yes. It is compatible, if you mean Dell OptiPlex 9020(Desktop) or Dell OptiPlex 9020 (Mini Tower). If you have OptiPlex 9020M we recommend you this memory model - [URL] If you have further question, please contact support[NAME].com. Thank you.By Timetec on May 15, 2017
Please I would like to know is that right RAM for my Dell OptiPlex 9020 mini tower?[URL]
Upgrading my ram question