Nifty! My HP came today and it's actually listed as a HP 420n (Not the HP 420i like I thought it would be). The drive still is marked as a ND-2500A on the case at the top.
The cool thing is the firmware included for it is v1.26. So it's a little different. I just made my first backup and so far seems to be good. Scanned it in my LDW-451S and the scan was nice for a Ritek-R03. I burned this at 4x and scanned at 4x even though the R03's were up to 8x selectable.
Just a quick note: I saved this after the disc was removed and in the stand-alone (Backup of The Last Samurai) playing already so that's why it's popping up about No Media, No Disc. It was a Ridata branded 4x DVD+R though.