3-12 Chapter 3Installing the SystemMedia Gateway SMG- 400PWRL1L3L2L4TXOPER RXP1P3P1P3P2P4P2P4LANSTATUSLOOPSLCSIOP4P3P2P1LOOPLAN110-240VAC1.4A 50/60HzI(ON)O(OFF)P4P3P2P1SLC12Media Gateway SMG- 400PWRL1L3L2L4TXOPER RXP1P3P1P3P2P4P2P4LANSTATUSLOOPSLC7. You can see 4 holes for screws in the bottom of the SMG-400 system. Among these 4 holes,select two holes into which the screws on the wall are inserted according to a direction inwhich the SMG-400 system is installed.❶ When installing the system such that ports on the back of the system face upward, hang thesystem on the wall such that the two screws on the wall are inserted into the two holes inthe back part of the bottom of the system.❷ When installing the system such that LEDs on the front of the system face upward, hangthe system on the wall such that the two screws on the wall are inserted into two holes inthe front part of the bottom of the system.8. Hold the SMG-400 system with both hands, match the two holes with the two screws on theconcrete wall, and lower the system.