I bought around 600 pc. HAP AC Lte Tower (RB952Ui-5ac2nD-TC) from different distributors in Russia.
250 pc. of them heve problems with USB Power. We check around 50 pc. with different 4G modems and power supplues.
When i discovered this problem i wrote in support ([SUP-4729])
Antons B. from support ask me to make test with USB HUB with external power.
I checked. With External power work normaly. But i can't use this way for 250 pc.
I want my money back for 250pc. with sn xxxxxxxxxxx/936 and /937
Russian distributor: 3logic
When we try to upload files, modem swich off and then swich on... loose connection. You can see it on attached video.
Work normaly on HAP AC Lite with another sn: