- Notes, cautions, and warnings
- Working on your computer
- Technology and components
- Exploded View
- Disassembly and reassembly
- Secure Digital Card
- Base cover
- Battery
- Memory modules
- WLAN card
- Solid-state drive
- Hard drive
- Coin-cell battery
- System fan
- Heat sink
- Speakers
- IO board
- Touchpad
- Display assembly
- Display bezel
- Camera
- Display panel
- Display back-cover and antenna assembly
- Power button
- System board
- Power-adapter port
- Palm-rest and keyboard assembly
- Troubleshooting
- Handling swollen Lithium-ion batteries
- Dell SupportAssist Pre-boot System Performance Check diagnostics
- Enhanced Pre-Boot System Assessment (ePSA) diagnostics
- System diagnostic lights
- Real-Time Clock (RTC Reset)
- Updating the BIOS in Windows
- Updating the BIOS using the USB drive in Windows
- Backup media and recovery options
- WiFi power cycle
- Drain residual flea power (perform hard reset)
- Getting help and contacting Dell
Vostro 3401 Service Manual
Removing the WLAN card
Prerequisites
- Follow the procedure in before working inside your computer.
- Remove the SD card.
- Remove the base cover.
- Disconnect the battery cable.
About this task
Steps
- Remove the single (M2x3) screw that secures the WLAN card bracket to the system board.
- Slide and remove the WLAN card bracket that secures the WLAN antenna cables.
- Disconnect the WLAN antenna cables from the connectors on the WLAN card.
- Pull out the WLAN card from the M.2 port on the system board.
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