Last time I counted
96 unique ones
But all in all i'd need to count my duplicates
Don't judge me
ChickenSqueeze02 May at 5:45 @CRAVINHO - It depends on what you want to use it for.
You can use it to backup your PS4 files (Saves, Game Data, etc.), but it cannot be used for extra storage that you can use directly from the PS4. To accomplish that, you'll need to replace the PS4's internal Hard drive.
That's my understanding of it at least.