Okay, Western Digital makes 3 levels of drives.. Green, Basic, Performance. Or called Green, Blue and Black.
Green are slow and made only for storage... They also save power.
Blue are basic drives with nothing special, but they work good.
Black work faster and have a better warrentee.
Interface is how you plug it in. You have that one... The other kind is ide.
Capacity is how big it is/how much you can put on it. And speed is how fast it turns on the inside... Like a record player.
Cache is about how fast it thinks.
Form factor is how big it is in real life. 3.5:' is for desktops, 2.5" is for laptops
Keep asking, we'll keep trying.
Wow i'm slow......
**** you Ghost