There has been some contention on whether or not the injector included with the UAP-HD can power the nanoHD and other lower UAPs, including UBNT support saying it doesn't work. UBNT-Schmid has overruled that and given an official answer via discord that it does work.

Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 20480 bytes) in /home/nevyxvrt/ on line 436