Crucial guarantees 32G will work.  For best performance, RAM should be installed in matched pairs (so if you now have one 8, add another;  otherwise buy two same-size modules and go to the full 32). [URL]  
I've interest Laptop Model Vostro 3510 - 11th Generation Intel® Core™ i5-1135G7 Processor (8MB Cache, up to 4.2 GHz) The original RAM size is 8 GB...But I need to upgrade, Is it can use which size for maximum ?
Maximum Memory Size for Vostro 3510