Sony VGN-SZ300 - Manual (Page 33)

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Using Your VAIO Computer
4 Close the tray by pushing it in gently.
!
Do not remove the optical disc when your computer is in a power saving mode (Standby or Hibernate). Doing so may cause the computer to
malfunction.
✍
If you plan to use an external optical disc drive, connect the drive before you launch any preinstalled CD/DVD program.