Commscope Amplifier with no Power input - Installed incorrectly?

Hello,

We have been having intermittent internet connection issues, and I'm wondering if the Commscope Amplifier wiring is the problem.  An Xfinity technician installed a Commscope CSMAPDU5VP amplifier at our house external box (as shown in picture), but there is no connection to the "Power In" port on the amplifier (bottom right in picture).    The amplifier was installed when we added another coax line.      "Out 1" is the new line, Out 2 and Out3 were already installed when the technician came.  Doesn't the amplifier need a power input connection in order to amplify the signal?    Any help would be appreciated thanks.