HP Compaq dx2100 ST Hardware Reference Manual page 21

Hardware Reference Guide
To install an expansion card:
1. Turn off the computer properly through the operating system,
then turn off any external devices.
2. Disconnect the power cord from the power outlet and disconnect
any external devices.
3. Remove the computer from the stand and lay the computer on its
side.
4. Remove the computer cover. Refer to
Cover."
5. Identify the slot into which you want to insert the expansion card.
6. Release the slot cover retention latch that secures the PCI slot
covers by lifting the green tab on the latch and rotating the latch
to the open position 1.
7. Remove the slot cover by sliding it up and out 2.
Removing the Expansion Slot Cover
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Hardware Upgrades
"Removing the Computer
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