The mikrotik technical support said that the cannot support Avenor V-ME500 because "because we have already 2 modems vendorid=0x05c6 deviceid=0xf000 (// Siptune LM-75, // Micromax MMX 300G). we are very sorry that we could not add support for this modem." It's technical support answer.
I use
Huawei EC 306-2 (Rev. В) - supported (> 50 device RB951Ui-2HnD).