Compaq Armada 7400 Reference Manual page 112

If you are running Windows 95 or Windows 98, you do
not need to turn off the computer or initiate Suspend
before removing a PC Card.
If you are running Windows NT without CardWare
provided by Compaq, you must turn off the computer
before removing a PC Card.
To remove a PC Card from the computer:
1. Open the PC Card door to access the PC Card slots and eject
buttons .
2. Depress the appropriate PC Card release button; the button
should now be fully extended
3. Depress the fully extended button to eject the PC Card from
the slot .
4. Remove the PC Card
If you are running Windows 95, the computer beeps twice if
it is turned on when the PC Card is removed.
.
.