Sony PCG-SR27 - Manual (Page 15)

Using the Optical Drive
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4 Double-click the drive you use under CD-ROM drive.
5 Click the Property tab and make sure the “Enable digital CD audio for this
CD-ROM device” box is checked.
To Connect the optical Drive
1 Remove the PC card slot protector from the PC card slot. See “Using PC
Cards” for details.
2 Remove the PC card from the bottom side of the CD drive.
3 Insert the PC card into the PC card slot with the SONY logo facing up. See
“Using PC Cards” on page 18 for details.
✍
You can connect the optical drive while the notebook is on, unless you plan to use the
System Recovery CDs. Turn off your notebook before using the System Recovery
CDs.
Removing the PC Card