pietro79

Hello,

I'm feeling a little dumb. It's proving difficult to find a clear answer.

I'm looking to buy an internal hard drive, to put into a cabinet, and use as an external hard drive (to save some money)

I've come across the following names and I don't know what the practical differences are...I'm worried about compatability issues... what're the differences between these... and assuming there are no compatability issues, is one better than the other?:

Serial ATA/150
Serial ATA/300
Ultra ATA/100

I would give you my computer specs, but don't know which would be useful, so ask me if you need

Thank you!

Sincerely,
Pietro