61189500L1-1B PRELIMINARY 4-1Section 4InstallationGENERALThe first three tasks for installing and operating the MX410/MX412 are to unpack, inspect,and install. Those tasks are detailed in this section of the manual, as well as information formounting the MX410/MX412 into an equipment rack or to a wall, making the proper connec-tions to the front and back panels, identifying the front panel indicators, and adding orremoving a Power Supply Unit (PSU) (MX410 only).RECEIVING INSPECTIONInspect the MX410/MX412 for any damage that might have occurred in shipment. If damageis suspected, file a claim immediately with the carrier, keep the original packaging for damageverification and/or returning the unit, and contact ADTRAN Customer Service. For warrantyinformation, refer to ìAppendix A, Warrantyî.ADTRAN SHIPPING CONTENTSAfter unpacking the MX410 or MX412 but before an initial power up, be sure that thefollowing items are present:ï MX410 and MX410 PSUorMX412ï Mounting brackets and screws for 19-inch rack or wall installationñ Ground lug with nut and lock washerñ Wire-wrap post cover and screwñ Power connectorñ Blank PSU cover (MX410 only)