The L21 PRO models offer significant upgrades over the early 2021 variants, including the Intel Core i7-11800H processors, a Thunderbolt 4 port, a PCIe 4.0 X16 slot for the RTX 3070/3080 dGPUs and an M.2 PCIe 4.0 X4 slot for storage solutions, plus a MUX switch for external displays. XMG removed the microSD card reader, on the other hand.
https://www.notebookcheck.net/XMG-upgrades-its-PRO-laptops-with-Tiger-Lake-H-processors-and-Thunderbolt-4-support.571742.0.html