951G-2HnD and Vodafone Mobile Broadband K3570-Z: no ports

Recently we bought a router (951G-2HnD) which is a great appliance. Today we try to install an USB dongle, with success, but it doesn't list the USB port under ports.

I just updated the router to v6.34.2 (stable), and the firmware also 3.24 (factory is 3.19), but everything still the same, cannot use the USB stick.

[sarics@MikroTik] > system resource usb print

DEVICE VENDOR NAME SPEED

0 1:1 Linux 3.3.5 ehci_hcd RB400 EHCI 480 Mbps
1 1:2 Vodafone (ZTE) Vodafone Mobile Br... 480 Mbps

[sarics@MikroTik] > port print
Flags: I - inactive

DEVICE NAME CHANNELS USED-BY BAUD-RATE



Please let me know, what can we do, or how can we fix this