Figure 48. System board callouts
1. Fingerprint reader (FP1)
2. Darwin 1 antenna cable (D1)
3. Darwin 2 antenna cable (D2)
4. P sensor connector (P)
5. LCD connector (LCD1)
6. IR-camera cable connector (CAM1)
7. M.2 solid state drive connector (SSD1)
8. Battery cable connector (BATT1)
9. Speaker 2 (SPK2)
10. Fan connector (FAN1)
11. Click pad FFC connector (TFAD1)
12. WLAN (WLAN1)
13. USH daughter-board FFC connector (CN66)
14. Speaker 1 (SPK1)
15. 5G WWAN (WWAN1)
NOTE:
For computers shipped without a 5G WWAN card, a WWAN shielding cover and WWAN bracket is preinstalled
to the computer. As a result, follow the steps in the 5G WWAN card removal/installation section to remove the WWAN
shielding cover and WWAN bracket before removing the system board.
Removing and installing Field Replaceable Units (FRUs) 81
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