Lenovo ThinkPad P1 Gen 2の公式文書によると、M.2SSDの最大厚さは2.22mmです。これは、残念ながら、厚さ3.58mmのm.2 SSDがP1 Gen 2に収まらないことを意味します。
According to the official documentation for the Lenovo ThinkPad P1 Gen 2, the maximum thickness for an M.2 SSD is 2.22mm. This means that unfortunately, a 3.58mm thick M.2 SSD will not fit in the P1 Gen 2.