Draytek Vigor2860 User Manual page 22

There are two mounting holes for installing antennas with extension base on Vigor router.
Please install them as shown below.
Note, if only one antenna shall be installed, please use the mounting hole (major signal
transmitted hole) near to the SIM card slot.
While installing the SIM card into the card slot, note that back plate of the SIM card slot must
be removed first and the direction of card notch must be on the left side.
8
Extension
Base
Major Signal
Transmitted Hole
SIM Card
Slot
Vigor2860 Series User's Guide