I was saying an original 60 gig, or an original 80 gig, the latter of which would be 2nd gen. The 60s are slightly preferred for PS2 compatibility, those had both of the PS2 hardware chips in them, where the 80s were part hardware, part software emulation; thus slightly less compatible with some games. Otherwise the original 80s are equal to the 60s, and run a tiny bit cooler. Either one is highly sought after.
Oh yeah, the 60s also have built-in memory card slots for SD, CF, and MemoryStick, but you can connect a card reader over USB if you really need to use any of those with a later system.
