Saved long long ago from an old Russian forum: wifi-connect.ru
The site is running now again, but without a forum, and no new info is available.
This is small Cisco Omni antenna.
Gain – only 2.2dbi.
This is dual diversity antenna and this is the reason to have 2 inputs. Antenna is just one dipole printed on PCB. They just can use two rubber ducks but may be this is the reason to pay more?
Another CISCO omni antenna for wifi – this time 5.2 dBi