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.
Pin Laptop Lenovo Ideapad 320 320-14ISK, 320-15ISK, 320-14IKB
Pin Lenovo Ideapad 320 320-14ISK 320-15ISK 320-14IKB ( 30Wh ) Chính Hãng Giá Rẻ | Mới 100% | Pin Laptop Lenovo 320 Bảo Hành 1 Đổi 1 | Ship Toàn Quốc. Pin laptop... - Giá bán: 1.280.000
Comparison Lenovo Ideapad 320S 15 vs Ideapad 520 15
Lenovo Ideapad 520s-14IKB (80X200J2VN) (Gold) i3-7130U CPU: Intel® Core" i3-7130U (2.7GHz, 2Cores, 4Threads, 3MB cache, FSB 4GT/s) RAM: 4GB DDR4-2133MHz Ổ ...
Does-Lenovo-IdeaPad-Gaming-3-15ARH05-have-two ...
Find compatible upgrades and system info for Lenovo IdeaPad Gaming 3 15IMH05. Discover RAM and SSD compatibility, slots, and max capacity.