One of the best additions to PCs over the last 10 years might be NVMe m.2 SSDs. It allows us to reach storage writing and reading speeds that are impossible with SATA-based storage, with the PCI Express interface being the only real bottleneck for drive performance. The Raspberry Pi 5 was the first generation of the tiny board to actually support M.2 SSDs, but it doesn’t have the full-size lot, which is where an adapter can help.
Source : This Adapter Can Give Your Raspberry Pi 5 An M.2 SSD