Sony PCG-VX88 - Manual (Page 55)

Connecting a PC Card Drive
You can use an optional optical drive with your computer. If you use an optional drive when your computer is running on
battery power, the battery life will be shorter. The drive draws power from the computer through a PC Card.
If you connect a non-Sony DVD drive to your VAIO ® computer, the DVD playback may not function
properly. The DVD software (supplied) must be installed to play a DVD.
For best performance, use a Sony compatible DVD drive.
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