HP ProBook 6550b Maintenance And Service Manual page 93

4. Remove the WWAN module (3) by pulling the module away from the slot at an angle.
NOTE: WWAN modules are designed with a notch (4) to prevent incorrect insertion of the
WWAN module into the WWAN module slot.
NOTE:
If the WWAN antennas are not connected to the terminals on the WWAN module, the
protective sleeves must be installed on the antenna connectors, as shown in the following
illustration.
Reverse this procedure to install the WWAN module.
Component replacement procedures 85