I just bought a A515-51-88NY and have read the many challenges that owners have experienced getting an adapter kit for their A515-51 laptops.
Some members have contacted their regional technical support representatives and received mixed answers. Others have found the parts from a third party but paid some high prices for a bracket, a ribbon cable, and eight screws.
There seems to be a kit on the US Acer site here that might contain the parts for a A515-51-88NY, but this cannot be shipped to Canada.https://us-store.acer.com/42-gp4n2-sv1-1
I am located in Canada. Who should I contact to get the parts that I need to add a HDD into my new A515-51-88NY laptop?