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
Can't Install M.2 SSD in Legion 5 17" : r/Lenovo
The Lenovo Legion Y90 is touted as a smartphone with a hybrid UFS 3.1 and SSD storage system - NotebookCheck.net News
Rent Lenovo Legion 5 Pro 16" Gaming Laptop - AMD Ryzen™ 7-6800H - 16GB - 512GB SSD - NVIDIA® GeForce® RTX 3050 Ti from $74.90 per month
Popular Lenovo Legion 5 17 laptop on sale for $649 USD with AMD Ryzen 5 5600H, GeForce GTX 1650 graphics, and 256 GB NVMe SSD - NotebookCheck.net News