Dell Latitude 5424 Rugged Service Manual page 104

2. Install the PCIe heatsink fan assembly [1] in the chassis and tighten the three captive screws [2] on the fan case.
3. Install the seven 'M2.5' screws [3] on the heat sink pipe and connect the fan cable [4].
4. Install the:
a. Bottom chassis cover
b. Batteries
104 Removing and installing components