Thanks @Krim for an idea
If you want to extend your UC almost for free, you can re-use pcb which comes with non LTE unit.
There are 2 unused usb ports there, which requires some soldering
One is easy accessible
(2 in center is DP and DM), other - GND and 5V
Second one requires to take 2 contact for DP and DM from PCI connection and take 5V and GND from other places
I decided that i need only one external USB, and internal contacts i will leave for possible internal device mount.
With super glue, USB DIP pcb and strong knife you can cut out and mount usb directly to the board(could be safely cut where mounted, but is something would go wrong - you can solder all contacts, including speakers directly to pci)
I mounted it and re-used small black grill from other dead device to cover up(+bonus cooling)