Sony L 用户手册

Place a disc in the middle of the tray with the label side facing upward and gently push it until the disc clicks into place.

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.

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If you plan to use an external optical disc drive, connect the drive before you launch any preinstalled CD/DVD program.