In step [3a] and [3b], unplug the jacks by using the removal tool antenna RF connector (P/N: 08K7159) or pick the connectors with your fingers and gently unplug them in direction of the arrow.
Wireless WAN slot cover and PCI Express Mini Card for wireless WAN installation.
When installing: Plug the red cable [3a] into the jack labeled MAIN , and the blue cale [3b] into the jack labeled AUX on the card.