What is a LDW-451S?

As far as I know Lite-on only sell the 411S and 811s
Where has the 451S come from and is just a rebadged 411s.

I have a manufacture Nov 2003 411s came with FS0B firmware
I just flashed to FS0G firmware

The lite-on site is down but they list it as a different drive.

I have one. It has a different firmware than the 411s. It’s firmware has also been updated and is still different than the 411s.

It has been said that the 451s and the 851s are replacements for the 411s and 811s. There are some different parts used to make the drive and that is why it needs a different firmware. I don’t know if one is better than the other.

I haven’t had any trouble with my 451s with either -r or +r media.