Is my laptop missing a ssd slot connector?

This video is about how to install ssd on a hp laptop The Hp 15-bs541tu laptop comes with

slot supports 4X bay is wired as SATA 1 x 88DJK

laptop m2 slot Interface Form Factor: · SATA · SATA · NVMe PCIe · NVMe PCIe · NVMe PCIe · PCIe · JetDrive · Type-C

laptop with 5g sim slot in india laptop expansion card interface called ExpressCard On the contrary, the L-series among others can only support cards using the PCIe standard in the WWAN