40126S.....I hope this refers to the new 6 series mediatek chipsets..and these maybe upgradable with firmware to 48/24/48 speeds that the new 6 series chipset is supposed to support
I saw this when I opened the Utlity......hit Smartburn button....
Released Date : 2002/6/12
Revision : V1.0
Drive Models : for 48X CD-RW
LTR-48125W : for firmwares after VS04
LTR-40126S : all firmwares
Since LITE-ON 32/40/48X CD-RW drive, Buffer Underrun Protection
Feature is always activated. The new feature of SMART-BURN is
to check CD-R/RW media quality and set burning speed limit
base on this. The burning speed will be limited by the
"SMART-BURN Speed Limit" shown on PC screen.
The identificated SMART-BURN Speed is matched with updated LITE-ON
40X CD-RW drives, LITE-ON will keep on update the version just for
more media identified