" As of January 1st, 2004 updates to the OS/2 Device Driver Kit have been discontinued."
http://www3.software.ibm.com/regsvs/ddk/
Some of the files are for pcmcia drivers.
[Moderator note: These files are the source for device drivers, such as Cardbus, printer, display, DASD, etc. The site requires a DDK logon registration, but I believe that is free.]
If one needs them, it is best to download them before they are gone. Some have dates of 12-2003 or 01-2004.
BigWarpGuy
Source: OS2VOICE