Juniper Systems Allegro MX User Guide - Manual (Page 17)

Power Supply
The Power Dock uses the AC wall adapter that comes with the
Field PC. Plug the Field PC power adapter into the dock, in the
back on the right, and then into the wall.
When the green LED indicator turns on, the Power Dock has
power.
Charging
The Power Dock charges the Field PC. Place the Field PC into
the Power Dock and the Field PC automatically turns on and
begins charging, the amber LED is on. When the amber LED
turns off, the Field PC is finished charging. The charging time
is the same whether the Field PC is turned on or off.
Note: Never operate the Field PC in the USB/Power Dock without
a battery installed. The dock does not supply adequate power to the
Field PC for normal operation. Do not use the Power Dock with
alkaline batteries installed.
USB Client (USB-B) 12V DC jack USB Client (USB-B) 12V DC jack
Ch 2 Battery and Power
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