Sony PCG-NV100P - Manual (Page 26)

Using PC Cards
Do not strike or shake the computer while writing data to a disc.
Always use the AC adapter as the power source for your computer if you are writing data to a CD-RW or CD-R disc.
Using battery power may result in data transfer failure.
Your computer includes two PC Card slots. PC Cards enable you to connect portable external devices such as another hard
disk drive, or a PC Network Interface Card (NIC) to connect to a network.
The PC Card slots can accommodate two Type I/II PC Cards, or one Type III PC Card. These slots are compatible with
CardBus. Use the lower slot for Type III PC Cards. You do not need to shut down your computer before inserting or
removing a PC Card.
Page 26