## Input/Output Device Driver Reference

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### Physical Device Drivers

Physical device drivers, in most cases, resolve device-independent input and output (I/O) requests from the operating system and its applications with the device-dependent physical attributes of the device. The physical device drivers shipped with OS/2 Version 3 include support for the following:

Advanced Power Management
Asynchronous Communication (RS-232C)
CD-ROM
Hard Disk and Diskette
Keyboard
Mouse
Parallel Port Printer
PCMCIA
System Clock
Touch Screen
Video