HP ProBook 6545b Maintenance And Service Manual page 139

Removal and replacement procedures
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Steps 4 and 5 apply only to HP Compaq 6445b and 6440b computer models.
4. Lift the right side 1 of the ExpressCard assembly to disconnect it from the system board.
5. Remove the ExpressCard assembly 2 by sliding it up and to the right.
Reverse this procedure to install the ExpressCard assembly.
Maintenance and Service Guide 4–65