I understand that M.2 and nvme are both different types of solid state drives respectively. But does this spec mean that there are both types in the pc itself, and that it (both) contributes towards that 128gb?
In your case, "128GB M.2 PCIe NVMe Solid State Drive (Boot)" is an NVMe drive, in the M.2 configuration, of 128GB in size.
And for any new system, "128GB" should probably be avoided. That is bordering on TooSmall.
Ah I see..Yes it still is.
128GB will quickly become quite cramped. Even though you try to direct things to the spinning HDD< some things do end up on the SSD anyway.