Dell POWEREDGE M915 - Manual (Page 6)

4
Getting Started With Your System
Installing the Blades
Beginning at the top, slide the modules into the enclosure from left to right.
When the blade is securely installed, the handle returns to the closed position.
Connecting the CMC and KVM Modules
Connect the serial cable and network cable(s) from the management
system to the CMC module. If a second, optional CMC module is installed,
connect it as well.
Connect the keyboard, mouse, and monitor to the optional iKVM module.