Fan

When both the master and slave chassis are installed, the slave chassis does not support the firmware upgrade.

On the MM910 web user interface (WebUI), you can query the version information of the fans, and upgrade the firmware online.

Table 1 describes the firmware upgrade functions on the MM910 WebUI.

**Table 1** Supported components and firmware for upgrades
Component	Firmware	Description
Fan modules (Fan)	Firmware	Fans of the same model must be upgraded one by one.

For details about upgrade steps, see the E9000 Server V100R001 Upgrade Guide