What do you mean by "new"? I had them before, and everytime I logged into Windows, I clicked on "My Computer" and you could see "Drive C;D;E" and I think I had an F too.
I think they are SATA drives, and when I click on my device manager, it shows that they're in there, but I can't see them when I click on "My Computer" so now I'm running out of disk space and I need to use the other drives to fit more files.