What-brand-type-of-SSD-1TB-should-I-get-for-my-Legion-Y520 - English Community - LENOVO COMMUNITY
Can't Install M.2 SSD in Legion 5 17" : r/Lenovo
Yes, Legion 5 Pro has two NVMe PCIe 3.0 2280 SSD slots, the second slot is empty and has a pre-installed heatsink with a thermal pad. (I installed Samsung 970 Evo 1TB
How To: Upgrade the RAM and SSD in a Lenovo Legion Y520 Laptop | Wyatt Fleming