How to open Dell Latitude 15 3540 – disassembly and upgrade options

Ensure the Dell Latitude 15 3540 is powered off and placed on a soft, clean surface to prevent scratches or damage.
Remove the 9 captive Phillips-head screws from the bottom of the laptop.
Use a thin plastic tool to gently pry the bottom panel off, starting from the sides and then working your way around the front and back.

Hint: Begin prying near the top corners to create an initial gap, which will make it easier to lift the panel.

Step 2: Removing the Battery

Disconnect the battery by pulling out its connector from the motherboard.
Remove the 5 Phillips-head screws securing the 54Wh battery
Carefully lift it away from the chassis.

Caution: Handle the battery and its connector with care to avoid any damage.

More info: The optional 54Wh battery provides up to 9 hours and 5 minutes of web browsing or 8 hours and 20 minutes of video playback, offering good battery life for productivity and entertainment.

Memory Upgrade

Locate the two SODIMM slots that support up to 64GB of DDR4-3200MHz RAM in dual-channel mode.

You can buy DDR4 RAM modules here: Buy from Amazon.com (#CommissionsEarned)

Storage Upgrade

Identify the single M.2 slot that accommodates both 2280 and 2230 Gen 4 SSDs for storage expansion.
Note the two small thermal pads beneath the NVMe SSD, designed to enhance cooling and maintain optimal performance.

Hint: Don’t forget to check out our Top M.2 SSDs Performance Rankings for insights on the best storage options available.

You can buy Gen 4 M.2 SSD modules here: Buy from Amazon.com (#CommissionsEarned)

Cooling System Overview

Examine the cooling system, which includes a single fan, one heat pipe, a heat sink, and a heat spreader, tailored to efficiently manage the thermal output of the device.