Both upgrades are possible. You need an M.2 2280 NVMe drive (open the case to make sure the mounting hardware is present;  if it's not, you'll need to order that from Dell).   Memory:  www.crucial.com
Its too slow and i want to upgrade its ram and add a ssd over my old hdd. So plz help me regarding the compatible ram and ssd for my laptop Want 8gb ram and 500gb ssd
Inspiron 15 3000