A515-51G-56K9 support nvme? bios showing sata 0 and sata 1 port so!

Hi,
This drive should work and it will work at half the speed specified by the manufacturers, please read this thread for more useful information:https://community.acer.com/en/discussion/537125/install-m2-ssd-on-aspire-5-a515-51g/p1
There won't be any noticeable difference between these drives under normal usage but if you transfer large files often, I would suggest a NVMe SSD.

MadhavMendpara said:

only nvme ssd work at half speed 

or  sata ssd also work at half speed?

Hi,
SATA SSD will work at the advertised speed and NVMe only will work at half the advertised speed.