Dell Latitude 3420 User Manual

Steps
1. Align and place the coin-cell battery on the palmrest assembly.
2. Connect the coin-cell battery cable to the connector on the I/O board.
Next steps
1. Install the WWAN I/O boardfor systems enabled with 4G LTE.
2. Install the WWAN card for systems enabled with 4G LTE.
3. Install the base cover.
4. Exit the service mode
5. Install the SIM card tray for 4G LTE enabled systems.
6. Install the microSD-card.
7. Follow the procedure in after working inside your computer.
USB cable
Removing the USB cable
Prerequisites
1. Follow the procedure in before working inside your computer.
2. Remove the microSD-card.
3. Remove the SIM card tray for 4G LTE enabled systems.
4. Remove the base cover.
5. Remove the battery.
6. Remove the hard-disk drive.
7. Remove the WWAN card for 4G LTE enabled systems.
Removing and installing components
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Dell Latitude 3420 Specifications

General

Harmonized System (HS) code	84713000