Dell PowerEdge M905 Getting Started With Your System page 13

Install the System in a Rack
Install the system in the rack once you have read the "Safety Instructions"
located in the rack installation documentation for your system.
See your rack installation documentation for instructions on installing your
system in a rack. For power and cooling guidelines, see the rack capacity
planner tool on www.dell.com.
Install 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.
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Getting Started With Your System