Will a storage expansion slot 2280 SATA3 of my laptop support

As @zoltanthegypsy correctly states, you system supports an PCIe NVMe 2280 SSD The Lenovo specifications listed below state it supports

Will a storage expansion slot 2280 SATA3 of my laptop support Switch off your device and as a safety precaution plug it out Open your system and locate the PCIe slot On the motherboard locate the interface

As @zoltanthegypsy correctly states, you system supports an PCIe NVMe 2280 SSD The Lenovo specifications listed below state it supports

nvme 40 in 30 slot 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

SATA-based, PCIe-based with NVMe support, or PCIe-based without NVMe support SSDs are all available An SSD with NVMe compatibility has up to five times

nvme gen 4 in gen 3 slot Leverage the full gaming performance of up to a AMD Radeon™ RX 7600S GPU with AMD Smart Access Graphics When your game library gets full, an empty NVMe SSD

An NVMe disk can be installed on a desktop computer, and if there is no slot, a classic SATA SSD can be installed After installing the SSD or NVMe disk,