Removal steps of the Wireless-LAN module Step Screw (quantity) Color Torque 3 M2 × 3 mm, flat-head, nylon-coated (1) Black 0.181 Nm (1.85 kgf-cm) When installing: Plug the gray cable into the connector labeled MAIN or 2 on the card, and plug the black cable into the connector labeled AUX or 1 on the card. 1080 M.2 solid-state drive in the Wireless-WAN-card slot Note: Before you start the servicing, disable the built-in battery. See “Disabling the built-in battery” on page 64. For access, remove these FRUs in order: • “1010 Removable battery” on page 64 • “1030 Base cover assembly” on page 65 74 T480 Hardware Maintenance Manual