HP ProBook 450 G1 Maintenance And Service Manual page 78

NOTE: Before you remove the card reader, make sure nothing (memory card or plastic insert) in installed.
1. Position the top cover upside-down.
2. Disconnect the cable that routes to the touchpad buttons (1).
3. Disconnect the cable that routes to the system board (2).
4. Remove the two Phillips PM2.0×2.0 broadhead screws (3) that secure the card reader board to the
computer.
5. Remove the card reader board from the top cover (4).
Reverse this procedure to install the card reader board.
66 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts