If the server is shipped in a rack, it must be supported by shipping brackets.
If the server is shipped to you in a rack, you must remove the front brackets before placing it in service. Removing the rear brackets is optional. See How to Remove the Universal Shipping Brackets.
If you plan to ship the server in a rack, see How to Install the Universal Shipping Brackets.
If you have ordered a server with shipping brackets, they are shipped in the accessory tray.