Hi,
UPS systems typically have only one USB port which they use to signal a power outage.
Is it possible that one QNAP signals the other that there is a power outage if I connect two QNAPs (ie 451D2 and 453E) to the same UPS have the 451D2 connected via USB to the UPS?
Thanks,
Assuming of course that your (unmentioned brand and model) UPS is supported, as @dolbyman says, itβs built into the GUI to setup a master slave relationship. Iβve been using it for many years and with the units i have, it works as described.