Lenovo IdeaPad y510p - RAM update?

Solution
Your link was useless to anyone who understands only English, so I went to the English page.

It should have two RAM slots since it supports dual channel technology which requires at least one pair of slots.
If both slots are already occupied, you simply remove the existing modules and replace with modules of greater capacity.
Same applies if there's only one slot, but I think you'll find there are two.
Your link was useless to anyone who understands only English, so I went to the English page.

It should have two RAM slots since it supports dual channel technology which requires at least one pair of slots.
If both slots are already occupied, you simply remove the existing modules and replace with modules of greater capacity.
Same applies if there's only one slot, but I think you'll find there are two.
 
Solution