I have a Huawei E3272.

I can not see LTE interface at ROS 6.10.

http://wiki.mikrotik.com/wiki/Supported ... _LTE_cards

http://item.taobao.com/item.htm?spm=a23 ... 6499256133

What's the problem?

what model RB are you using. I now can't find the page, but depending on model, there was a note on a wiki page saying that the first time you plug a new USB device in, you may have to reboot the RB (not system reboot, but actually remove power to the RB). The one time I used a 4G USB modem with a RB2011, this solved the problem.

edit
Found it:
http://wiki.mikrotik.com/wiki/Manual:USB_Features

Warning: On RB2011 and CRS series boards usb devices may not work first time they are plugged in. Power cycle (not reboot) is needed.