The port labeled “PoE” accepts 802.3at and 802.3af power and should be used as the primary uplink to your LAN/
WAN.
Power Source Options
The MR42 access point can be powered using either the Meraki AC Adapter, PoE Injector (both sold separately), or a
third-party PoE switch.
The MR42 will function in low power mode when powered by a 802.3af power source. While in low power mode, the
MR42 will disable its Air Marshal radio as well as two out of three transmit streams on the 2.4 Ghz band. Despite being
in low power mode, the device can still supply full 802.11ac capabilities.
Factory Reset Button
If the button is pressed and held for at least five seconds and then released, the MR42 will reboot and be restored to its
original factory settings by deleting all configuration information stored on the unit.
LED Indicators and Run Dark Mode
Your MR42 is equipped with a multi-color LED light on the front of the unit to convey information about system
functionality and performance:
• Orange - AP is booting (permanent Orange suggests hardware issue)
• Rainbow - AP is initializing/scanning
• Blinking Blue - AP is upgrading
• Green - AP in Gateway mode with no clients
• Blue - AP in Gateway mode with clients
• Blinking Orange - AP can't find uplink
NOTE:
Blinking Green LED indicates that the device is in site survey mode. Please see the Conducting Site Surveys
with MR Access Points for more details.
The MR42 may be operated in “Run Dark” mode for additional security and to reduce the visibility of the access point. In
this mode, the LED will not be illuminated. This mode may be enabled through Meraki dashboard.
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