Sony PCG-R505TSK - Manual (Page 69)

Connecting an Optical Drive
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2 Place the disc in the tray with the label side facing up. Push the disc onto the
hub until the disc clicks into place.
3 Close the tray by pushing it gently. The BUSY indicator on the drive flashes
while your notebook reads data from the disc.
To Remove the Drive
Remove the PC card from the computer. See “Using PC Cards” for details.
Inserting Disc
✍
When the notebook is in power saving mode, the tray will not open.
Disc