Removal steps of the M.2 solid-state drive in the Wireless-WAN-card slot Step Screw (quantity) Color Torque 2 M2 × 3 mm, flat-head, nylon-coated (1) Black 0.181 Nm (1.85 kgf-cm) When installing: Ensure that the M.2 solid-state drive is securely seated in the wireless-WAN-card slot. 1090 Keyboard 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: • “1010 Removable battery” on page 64 Removal steps of the keyboard Loosen the two screws that secure the keyboard. Chapter 9. Removing or replacing a FRU 75