I'd say it's a Lite-On of some variety myself by the looks of that pic. You could possibly ask about this drive on the Lite-On forum. Omnipatcher could possibly work on it to flash it to a regular Lite-on drive but I'd ask first and see if one the Codeguys can give you anymore information regarding this drive. Sorry about my original post, I should learn not to post when half asleep! I should've known in advance that the Firmware revision wouldn't really be very useful at all sigh - I am normally more careful than posting a stupid and very pointless question.
I though the Lite-On DVD-Burners had the 40x specs, not sure on this though... uhm, looking on newegg....
Might not be a Lite-On! I wish I had more information for you:
From the 1633S:
Write Speed: DVD+R DL 2.4X, DVD+R 16X, DVD-R 8X, DVD+RW 4X, DVD-RW 4X, CD-R 48X, CD-RW 24X
Read Speed: 48X CD-ROM, 16X DVD-ROM
So the CD-R write speed is off unfortunately although the RW speed is correct.