Model: Tecra 550CDT
Operating System: (Note: might work with other versions of this os.)
DOS CD-ROM drivers for Toshiba notebooks. Includes 4 different versions of TOSCDROM.SYS for 2X (v2.01), 4X (v2.16), 6X (v3.00), 10X (v3.03), 20X (v3.11), and an interactive DOS installer to help you get the correct version copied to your hard disk.
The 20X driver is the most recent version, and should work properly for all models 20X and lower as well as DVD drives (supports CD-ROM only).