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 I add an extra SSD to my Lenovo Legion 5i laptop?
Lenovo Legion T5 - Intel i7-12700, 16GB RAM 1TB SSD, GeForce RTX 3060 12GB, Windows 11 Pro