7. Disconnect the power supply unit (smaller board) from the mainboard.
8. Connect 12V PSU for Hub/Hub Plus/ReX to the mainboard using the eight-
pin connector between them. Do not warp or bend the antennas while
replacing the board: this can cause the device to malfunction.
9. Reassemble the boards and the device body than tighten the screws.
Check that the battery and its cables are not clamped. When installed properly, the
boards stand rmly on all guides and do not stagger. Holding the boards together
with the back lid, turn the device over. The SIM card slot, power, and Ethernet
sockets should match accurately and t the corresponding sockets, and the power
button should not be stuck.Change the information about input voltage on the
