Lenovo Ideapad 330S-15IKB Disassembly RAM SSD Hard Drive Upgrade Repair Part 3 - YouTube
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
Lenovo-ideapad-330s-SSD-slot - English Community - LENOVO COMMUNITY
How to open Lenovo IdeaPad Slim 3 (14 AMD, Gen 8) – disassembly and upgrade options | LaptopMedia UK