Hello
We just got some RouterBoard LHG and they look really neat.

When i was assembling it i came across with this metal piece and im not sure where it goes.. well, i see there are 2 cavities but there is only one metal piece so i'm unsure if is for giving some up/down tilt? or its needed for proper use?  I can not find any instructions about this..

Thanks, best regards.

JB.

The package also contains a small adapter for tilting the antenna five degrees from the original position
http://i.mt.lv/routerboard/files/LHG-160511085639.pdf

it isn't important ,fix it with Plastic zip tie

Like Inox said, this optional piece can be inserted into a slot, to introduce an angle. 

Thank Inox and Normis...

As they say... RFB (read the freaking book.) hehe..