Lenovo 4304493 - Manual (Page 35)

Optional Device Driver Settings
The following options can be specified for the CD-ROM device driver:
/P:nn I/O base address. The sound function is mapped from
this address (hexadecimal).
/EXIRQ:n The specified IRQ number is excluded. Another IRQ
number is assigned to the sound function.
/NOBEEP The device does not beep at insertion of the PC card.
Step 4. Completing the Installation
Ensure that you have shut down and restarted the operating system so
that you can use the drive. Following are some additional notes on
the installation process:
If you have two or more PC Card slots on your PC, you can use
any slot for the CD-ROM drive. The drive letter assigned to the
CD-ROM is independent from the PC Card slot number.
If you are using the base model and you want to play a CD-ROM
game using sound, your computer must have an installed sound
function.
You can use only one CD-ROM drive with your computer even if
your computer has more than one PC Card slot.
If you install another PC Card while you are using your
CD-ROM drive, your CD-ROM drive might be disabled.
2-24 20X Max Portable CD-ROM Drive