45Replacing the processor andheatsink fan assemblyNotes:• Always connect the power cord last and always remove it beforeadding, removing or changing any hardware components. Makesure that you install the processor in the CPU socket before youinstall the CPU heatsink fan assembly.• If you buy a processor separately, make sure that you use an Intel-certified multidirectional heatsink fan assembly only.• Make sure to install the mainboard in the server before you installthe CPU heatsink fan assembly.• When receiving a mainboard without a processor pre-installed,make sure that the plastic CPU socket cap is in place and none ofthe socket pins is bent; otherwise, contact your retailer immediately.Removing and installing the heatsink fanassemblyRemoving the heatsink fan assemblyWarning! We do not recommend that the processor or the heatsinkassembly be removed. However, if you do need to uninstall theheatsink fan assembly, please follow the instructions below to preventdamage to the processor or the CPU socket.1 Observe the pre-installation instructions on page 26.2 Remove the side panel described on page 28.3 Lay the server on its side (components showing).