Dell Vostro 2420 (Mid 2012) - Manual (Page 20)

Installing the Wireless Local Area Network (WLAN) Card
1. Slide the WLAN card into its slot until it clicks into place.
2. Connect the antennae according to the color code on the WLAN card.
3. Install:
a) palmrest
b) keyboard
c) battery
4. Follow the procedures in After Working Inside Your Computer .
Removing the Coin-Cell Battery
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove:
a) battery
b) keyboard
c) palmrest
3. Disconnect the coin-cell battery cable from the system board.
4. Remove the coin-cell battery from the computer.
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