Precision 3640 Tower Service Manual

Installing the power supply unit

If you are replacing a component, remove the existing component before performing the installation process.

The following images indicate the location of the power supply unit and provides a visual representation of the installation procedure.

Insert the PSU into the PSU slot and slide it towards the back of the computer until it clicks into place.
Replace the four #6-32x1/4 screws to secure the PSU to the computer.
Place the power supply bracket and tighten the two #6-32x1/4 screws to secure the PSU to the computer.
Insert the PCIe card holder into the slot on the chassis and press it firmly to secure the holder to the top of the graphics card.