Look this:!!
https://routerboard.com/RBwAPR-2nD
The bad thing is that it is incomplete.
Why it is incomplete? Do you mean that there is no LTE card?
Look this: https://i.mt.lv/routerboard/files/wAP_lte_kit-170711155014.pdf
Will be version with and without LTE card.
Now the kits are complete. kkkkk