Sony PCG-F540 Primary User Manual page 51

Close any applications that are using the PC card.
Click the PC card icon in the taskbar and close the card window.
Pull the PC card release button up and press it in toward the
computer.
Gently grasp the card and pull it out.
Insert the PC card slot protector back into the empty slot.
Double-click in the system task tray.
The "Unplug or Eject hardware" dialog box appears.
In the Unplug or Eject Hardware dialog box, select the appropriate
option, and then click Stop.
Confirm the device and click OK.
A message appears informing you that the device can now be safely
removed from the system.
Press the PC card RELEASE button to remove the PC card.
Make sure to disconnect the power cord before cleaning the
computer.
Avoid rubbing the LCD screen as this can damage the screen. Use a
soft, dry cloth to wipe the LCD screen.
Clean the computer with a soft cloth lightly moistened with a mild
detergent solution. Do not use any type of abrasive pad, scouring
powder or solvent, such as alcohol or benzine.