DIMM - Wikipedia
I understand that your laptop Lenovo IdeaPad Y510p has only 2 SODIMM slots but even tough in Task Manager its showing 4 memory slots.
HP Pavilion 15-eh RAM Replacement
For best Pavilion 15-eg0025nr Laptop performance use the maximum amount of 64GB, fill all the slots with the max allowed memory per slot for your Laptop.
Laptop Dell Vostro 3590 GRMGK1 (Core i5-10210U/ 4GB DDR4 2666 ...
In this guide I disassemble a Dell Inspiron 7501 (model P102F) laptop. Dell Inspiron 7501 design highlights:- This laptop has two M.2 PCIe solid state drive slots.- 8GB memory soldered to the motherboard.- ...