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 Legion 5 17.3" 144Hz Gaming Laptop FHD AMD Ryzen 7 with 8GB Memory NVIDIA GeForce RTX 3050 512GB SSD Phantom Blue 82K000ANUS - Best Buy