Hello everyone. My laptop came with a 512GB SSD model HFS512G39TND-N210A. When searching online, I found that it is a SATA3 6.0 Gb/s interface. After testing it in CrystalDiskMark, it achieved the expected speeds.

However, I found this thread on Acer Community claiming that SF314-54G has a M.2 slot with PCIe NVMe 3.0 x4 interface:
https://community.acer.com/en/discussion/602240/acer-swift-3-sf314-54g-m-2-slot-and-ssdIn the thread, there is also a picture that shows my SSD model with a PCIe NVMe 3.0 x4 interface.
The only thing that comes to mind is that there might be an additional M.2 slot in my laptop with the NVMe interface, but I'd like it if someone could confirm this before I open the laptop and attempt to upgrade my storage.