But watch out. I have an old Dell Inspiron 15 3521 with a 4GB of RAM. Dell wanted $60 for only 4GB of ram, but I bought this 8GB of ram for $34 . Dell also said that this laptop could only use 8 GB total (2x 4GB), but quick internet searches show that was a win 7 issue and win 10 easily works with 16GB on this laptop.

https://www.amazon.com/Tech-1600MHz-PC3L-12800-Unbuffered-Notebook/dp/B00C5389HQ