Can anyone tell me why the antenna connection labelled "main" is missing from the RB411AR?
Looking online I've noticed some images of 411AR's do have 2 connectors but they are U.FL connectors but the boards with only one connector use MMCX.
![Image](http://images.gblmedia.com/mikrotik/rb411ar_00.gif)
Are the solder points for "main" live so could be used of a connector was soldered on?
Any ideas?