Dell Pro Max 16 - USH Board; Removing the USH Board

3. Install the base cover.
4. Follow the procedure in After working inside your computer.
USH board
Removing the USH board
CAUTION: The information in this removal section is intended for authorized service technicians only.
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Remove the base cover.
3. Remove the battery.
4. Remove the wireless card.
5. Remove the battery frame.
About this task
The following images indicate the location of the USH board and provide a visual representation of the removal procedure.
Figure 46. Removing the USH board
Steps
1. Disconnect the USH-board cable from the connector (CN) on the USH board.
2. Disconnect the smart-card reader cable from the connector (SC) on the USH board.
NOTE: This step applies only to computers shipped with a smart-card reader installed.
3. Disconnect the NFC-sensor cable from the connector (NFC1) on the USH board.
NOTE: This step applies only to computers shipped with an NFC sensor installed.
4. Remove the two screws (M2x2) that secure the USH board to the palm-rest assembly.
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Removing and installing Field Replaceable Units (FRUs)