Pre-installation Requirements
 
 
    Prepare the site for the installation, and ensure that you have the appropriate people and
      tools on hand.
  Installing most ExtremeSwitching series
      switches requires two people to maneuver the switch and attach mounting hardware.
    Provide enough space in front of and behind the switch so that you can
      service it easily. Allow a minimum of 48 inches (122 cm) in front of the rack and 30 inches
      (76 cm) behind the rack.
  Some ExtremeSwitching switches give you the
      option of choosing the airflow direction: front-to-back or back-to-front. If your switch has
      internal power supplies, make sure they have the same airflow direction as the fans in the
      switch.
  Other switches support airflow in only one direction. If your switch model
      supports only front-to-back airflow and requires the purchase of internal power supplies, make
      sure that the power supplies are for front-to-back ventilation airflow.
  The following items are provided with 
ExtremeSwitching switches:
        - Screws for attaching mounting brackets to the switch
          housing.
 
        - Two rack mounting brackets adaptable for either a front-mount or
          mid-mount
          installation.
 
        - Two rear mounting brackets (rails) for rear mounting in a four-post
          or cabinet installation.

Note   
Rails are supplied only with the
            following switches:
              - X450-G2
 
              - X460-G2 PoE models:
                  - X460-G2-24p-GE4
 
                  - X460-G2-24p-10GE4
 
                  - X460-G2-24p-24hp-10GE4
 
                  - X460-G2-16mp-32p-10GE4
 
                  - X460-G2-48p-GE4
 
                  - X460-G2-48p-10GE4
 
                
 
              - X465
 
              - X480
 
              - X670 and X670V
 
              - X670-G2
 
              - X690
 
              - X770
 
              - X870
 
            
 
 
      
     
  You need the following additional tools and equipment. These
      are not provided with your switch.
        - Rack mounting screws: eight for a four-post installation; four for
          other installations. The screw size will vary based on your organization‘s rack system.
          Screws are not provided. 
 
        - Screwdriver for securing the switch to the rack. The screwdriver
          size will vary based on the requirements for the rack system you are using. 
 
        - #2 Phillips screwdriver to attach bracket
          screws that are provided with the switch. We recommend using a magnetic screwdriver.
 
        - AC power cord. For switches with removable AC power supplies, a
          separate power cord is needed for each installed power supply. The cord must meet the
          requirements listed in Power Cord Requirements for AC-Powered Switches and AC Power Supplies. 
 
        - ESD-preventive wrist strap for installing optional ports at the back
          of the switch.