Owners Manual
Table Of Contents
- Precision 3240 Compact Service Manual
- Working on your computer
- Technology and components
- Major components of your system
- Disassembly and reassembly
- Recommended tools
- Screw List
- SMA antenna
- Side cover
- Top Cover
- Front bezel
- Hard-drive assembly
- WLAN card
- Speaker
- Fan assembly
- Memory modules
- Riser card
- Dell Ultra Speed Drive
- Graphics card
- Solid-state drive
- Optional IO card
- Coin-cell battery
- Heat sink
- Interposer module
- Processor
- System board
- Internal antenna
- System board
- Internal antenna
- Troubleshooting
- Getting help and contacting Dell

Steps
1. Connect the antenna cables to the WLAN card.
The following table provides the antenna-cable color scheme for the WLAN card of your computer.
Table 8. Antenna-cable color scheme
Connectors on the
wireless card
Antenna-cable color Silkscreen marking
Main White MAIN △ (white triangle)
Auxiliary Black AUX ▲ (black triangle)
2. Place the WLAN card bracket to secure the antenna cables.
3. Align the notch on the WLAN card with the tab on the WLAN card slot. Insert the WLAN card into the connector on the
system board.
4. Replace the (M2x3.5) screw to secure the WLAN card bracket to the WLAN card.
Next steps
1. Install the hard-drive assembly.
2. Install the side cover.
3. Follow the procedure in after working inside your computer.
Disassembly and reassembly
37