five 55 slot

For the 2.5" spinner HDD or if you want to fit an additional 2.5" SSD drive you need this optional SATA/Power cable FCC CABLE fitted to either a 2.5" spinner HDD (shown below) or you can also fit it to a 2.5" SSD drive. SSD-1 M.2 drive, note the fixing screw SSD-2 M.2 List of all OEM Acer recommended M.2 drives for your laptop slot bank bsi