Dell Inspiron 14-3421 Disassembly and SSD, RAM, HDD Upgrade Options

In this guide, I’ll explain how to disassemble the Dell Inspiron 14-3421 to remove and replace the hard drive, DVD drive, keyboard, palm rest, RAM, wireless card, bottom case, USB board, heat sink, cooling fan, and motherboard.

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Unlock and remove the battery.

Pull out the DVD drive.

The laptop installed a Samsung SU-208 DVD drive.

Remove the screws securing the service cover.

Lift and remove the service cover.

Under the cover, you can access the RAM, wireless card, and hard drive.

Remove the screw securing the hard drive module. Lift up the black tape and slide to the left.

It installed a Seagate 500GB 5400RPM hard drive.

Remove one screw securing the wireless card and disconnect two antennas. Take it away from its slot.

The laptop has two RAM slots, which means you can install another RAM.

Remove all screws from the bottom case.
Turn over the laptop.
Pry up and remove the keyboard.

Keyboard

Remove four screws securing the palm rest.
Disconnect two cables.

Pry up the palm rest.

The palm rest has been removed.

In the next step, we will remove the motherboard.

Disconnect the cable. You can find one screw.

Now, you can remove the motherboard.

Loosen three screws securing the heat sink and disconnect the cooling fan cable from the motherboard.

The heat sink and cooling fan

Dell Inspiron 14-3421 USB board

LCD hinge

Card reader

For more guides, check out the Dell Inspiron 14-3421 device page.