Acer 517-54 Storage expansion, could I add another M.2 SSD?

I see in my laptop that I have an M.2 SSD already installed; however I wanted to expand the storage.
I know that I can use the SATA connection to expand it, and even there is a slot for it, but also on to the right, I see another PCIE/SATA slot, suggesting I could add another M.2 SSD?
The help article does not mention this but is clear to me there are 3 slots.

So now I am confused, can I add 2 extra storages then, or is only 1 extra, that can be between SATA, or PCIE?

1- My current Storage (from factory)

2-PCIE/SATA: This one is literally marked as 2, and is next to the RAM memory

3- The slot to add another memory with SATA connection.

[Edited the thread to add issue detail]

Accepted answers

All comments

Puraw

https://community.acer.com/en/discussion/714100/acer-517-54-storage-exansion

Hi, the ACER Aspire A517-54 has one PCIe M.2 slot, you are probably referring to the Nitro AN517-54 laptop, you can install a M.2 Gen3 NVMe SSD in the second slot up to 1TB like the Gen3 Samsung 970Evo Plus.

StevenGen

https://community.acer.com/en/discussion/714100/acer-517-54-storage-exansion

The only Acer model that resembles your listed Acer 517-54 (there is a 2022 Aspire A317-54 model if that is what your model is, let us know?) but if its not, the only other model that the 517-54 that it can be associated with is the Acer Nitro AN517-54 model, which is a 2021 laptop that has the following Storage Subsystem driver specs with its different NVidia dedicated graphics below.