I tried to plug in laptop in the car which I have done tons of times and it worked fine but today it blew the fuse. Anyone know why?

I replaced it with one of the spares provided. I was wondering where do I buy fuses for the 03 TLS? Acura or any local store?? I looked in my old car and it seems that these are a lot smaller than the ones I have in another car.

 

as for y it blew? but you can get the fuses at any local parts store