HP 300

Accessory Cards
Preliminary Requirements
1. Turn the computer off.
2. Remove the power cord.
Procedures
1. If the accessory card is behind an accessory slot cover, remove the accessory slot cover.
2. If the accessory card is behind an I/O card rear panel, disconnect the I/O cables from the
I/O card and remove the I/O card.
3. Raise the accessory card's ejector levers with your finger tips and unseat the accessory
card from the unit's backplane connector.
4. Remove the accessory card.
NOTE
Before installing accessory cards, ensure they are correctly configured
for the application and/or peripherals. Refer to the accessories Instal-
lation Note for the correct configuration.
5. To install the accessory card, reverse steps 1, 2, 3, and 4.
Power Supply
Preliminary Requirements
1. Turn the computer off.
2. Remove the power cord.
Procedures
1. Using a #1 Pozidriv® screwdriver, unscrew the two screws holding the power supply
access cover in place. Refer to Figure 2-3.
WARNING
A shock hazard exists on the power supply until about one minute after
the unit
is turned off. Use caution in handling the power supply.
Assembly Replacement 29
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