So, this is a last resort for me.
I'm taking third RB951Ui-2nD hAP to seller tomorrow. Same with the third ZTE-MF823.
First one worked for almost a year, then I've changed modem from Yota LU-150 to ZTE MF-823.
It worked for a week, then lte1 interface was missing from interface list.
Also, it didn't show anything else than RB400 EHCI (device 1:1) in System - Resources - USB.
I tried to check the modem in my PCs usb port - nothing. Linux dmesg shows nothing. No led activity, no USB device in lsusb output.
I tried to put the other modem in Mikrotik's usb port - nothing. No new devices in System - Resources - USB, no new interface in interfaces list.
BTW, ether5's led is lit red, doesn't matter which POE out setting is set (auto on, off or forced on).
And box is REALLY HOT near the USB port.
So, after first time it happened, my seller replaced both Mikrotik and LTE modem.
Second pair (RB+MF823) worked less than a week. Completely same symptoms - both for modem and mikrotik's usb port.
Third one didn't last 24hrs. Completely same symptoms.
All three times mikrotik's box was cold while usb modem was working, but when red led was lit - it was extremely hot, usb port and modem were both dead.
Power adapter was replaced with all three times with Mikrotik, third rb+zte pair was tested by me at work, so no power line issues could give this result, as my server room at work has stabilized power for our servers.
First time modem was inserted directly into USB-port of Mikrotik device, second time it was inserted into 0.5m usb extension cable, third time it was inserted directly again.
Can someone help me please?
Is there any problem with ZTE MF-823 compatibility with Mikrotik devices?
Are there any solutions?