Thank you.If you have a GPU installed
It may be blocking the m2 slot from view
It's just above the GPU slot and just below the CPU socket
The user manual says it supports both pcie and sata m2 drive
Here is the Q170M2 manual. Is yours the same one?
Acer scammed you, that's SATA SSD, which would have been as fast as 2.5" drive in end of SATA cable.
While that would fit into mobo (M.2 mode needs to be set to SATA in BIOS) really wouldn't waste only M.2 slot for some secondary SATA drive.
There are USB enclosures for both SATA and PCIe M.2 drives which cna be used to access drives.
https://www.akasa.com.tw/update.php?tpl=product/product.detail.tpl&no=181&type=Enclosures&type_sub=SSD Accessories&model=AK-ENU3M2-04
Can my SSD be put on an adapter card similar as this one and insert the adapter card into PCIEX1_1 on Asus Q170M2 board ?