1. Press the Windows key + r to open the run box.
2. Type CMD and press enter
3. Type wmic bios get serialnumber and press enter
4. Go to this website and put in the serial number https://partsurfer.hp.com/search.aspx
This will show you all of the components that was inside your computer when it was shipped to you. Look for "SSD" to find the part number and description. Do a search using the part number to find out what kind of SSD you have.