Sony VAIO PCG-V505CP Hardware Manual page 34

Using your VAIO computer
Before you remove the PC Card, click the PC Card icon in the taskbar and close the card. Close any applications that use the PC Card before removing
the card. Otherwise, data may be lost.
While the card is inserted, your computer may not enter the Hibernate power management mode. It may enter Standby mode. It is recommended
that you remove the card before your computer enters Hibernate mode by pressing the <Fn>+<F12> keys or by using the PowerPanel Utility, and
when it is set to enter Hibernate automatically while using a battery as the source of power.
Some PC Cards or their functions may not be compatible with this computer.
Troubleshooting PC Card
My PC Card is not working
Make sure the PC Card is compatible with your version of Windows.
Use the Sony Notebook Setup utility to disable devices you are not currently using.
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