Installation, Maintenance, and Upgrade• Install, Remove, and Replace the Network Module, on page 1• Remove and Replace the Fan Module, on page 4• Remove and Replace the SSD, on page 6• Remove and Replace the Power Supply Module, on page 9• Connect the DC Power Supply Module, on page 13• Secure the Power Cord on the AC Power Supply Module, on page 19• Install the FIPS Opacity Shield, on page 22Install, Remove, and Replace the Network ModuleHot SwappingStarting with FXOS 2.3.1, the Firepower 10-Gb and 40-Gb network modules (without hardware bypasssupport) support hot swapping, but you must hot swap with an identical network module, that is, a networkmodule with the same PID. See Product ID Numbers for the network module PIDs. You must bring thenetwork module offline using the appropriate CLI commands before removing the network module fromthe chassis so that all network module configuration is saved. See the “Taking a Network Module Offlineor Online” topic in the Security Module/Engine Management chapter in the Cisco FXOS FirepowerChassis Manager Configuration Guide.We do not recommend that you remove the network module without bringing it properly offline usingthe appropriate CLI commands.CautionYou must have ROMMON 1.0.10 or later on the Supervisor to support hot swapping. For the ROMMONupgrade procedure, see the "Firmware Upgrade" topic in the Image Management chapter in the CiscoFXOS Firepower Chassis Manager Configuration Guide for your software version.NoteTo remove and replace the network modules that do not currently support hot swapping, power off thechassis, replace the network module, and then power the chassis back on.Acknowledgment is necessary if you decommission and physically remove a network module and donot replace it, or if you replace it with another PID. See the "Acknowledging a Security Module/Engine”Installation, Maintenance, and Upgrade1