Hi all,
I'm too lazy to edit the WIKI but here's the list of dongles I have tested on RB951Ui-2Hnd and RouterOS 6.10
Huawei E1553
Huawei E357
Huawei E173
Alcatel One Touch X230M
All are working, although each of them has their own Info Channel and Data Channel. But everything will be detected once you plug them, just input the access point and you're good to go.
I'm still trying 2 more USB dongles. I'll update once they are successful.
Thanks!