Sony PCG-NVR23 - Manual (Page 27)

Using PC Cards
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.
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