What is the Personal - System Logs item in my inventory? [duplicate]

I see that I have a new category in my inventory named Personal, and it contains an item called System Logs. What is this for? Will I need it in the future or can I sell it to make room for other more useful items?


The personal category is for an echo that would give you a bit of a backstory regarding whichever character you pick when you first start the game. I personally haven't found another use besides that. It was also a feature in Borderlands 2. I'm unsure whether it was in the original Borderlands.