Dell PowerEdge M600 - Manual (Page 165)

Installing Enclosure Components
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3 Reinstall the CMC module and reattach any cables that were
disconnected. See "Installing a CMC Module" on page 165.
On a single CMC system, the SD card will activate automatically. For
redundant CMC module systems, initiate a changeover to make the passive
module active using the following steps:
1 Navigate to the Chassis page.
2 Click the Power Management tab.
3 Click the Control sub tab.
4 Select the Reset CMC (warm boot) button.
5 Click Apply.
The CMC will automatically fail over to the redundant module, and that
module will now become active and display a solid blue status LED. The
SD card will activate automatically.
See the CMC User’s Guide for information on configuration and usage of the
FlexAddress feature.
Installing a CMC Module
1 Remove the I/O connector cover. See Figure 4-4.
2 Ensure that the CMC module handle is fully open.
3 Slide the module into the enclosure until the handle contacts the
enclosure.
4 To fully seat the module, close the handle until the release latch snaps into
place.
5 Reconnect the cables that were attached to the module.