HP Compaq Presario,Presario 2100 Reference Manual page 56

CAUTION
Note
Removing a PC Card
Before removing a PC Card, you must use the Eject Hardware or Safely
Remove Hardware icon in the taskbar, or shut down the notebook. Otherwise,
you could lose data.
1. Before removing the card, select the Eject Hardware or Safely Remove
Hardware icon in the taskbar, and then select the card you want to remove.
This protects your data and helps avoid unexpected problems.
If needed, you can restart the card by removing and then reinserting it.
2. Press the eject button to pop the button out, and then press it in to eject the
PC Card.
Location of PC Card slot varies by model.
Before you connect any device, check its documentation to see if you need to make
any settings or adjustments to the equipment before using it. This might include
setting switches to configure the equipment so that it will operate properly with
your notebook and the software you plan to use.
Add-On Devices
Connecting External Devices
Reference Guide 49