Acer E1-421-0-BR899 mini pcie unlock doubt

Hi !
I have an Acer Acer E1-421-0-BR899 with unlocked UEFI 2.12 BIOS
I unlocked my BIOS settings with the help of the forum, but I have one more doubt:

Is the mini PCI express slot here blocked ?

I know some Acer models have a blocked mini pciexpress so only some stuff can work with the slot

But did the BIOS mod also unlocked the mini PCIe ?

I can not test anything here because the slot size is half and I only have wireless boards with halfsize and I bought a mini PCIe extender card so I can use fullsize mini PCIe with an external DIY case

The thread about the BIOS unlock is this:
https://www.bios-mods.com/forum/Thread-Acer-E1-421-0-BR899-UEFI-2-12-Unlock

tks