This cable is a SMA connector that will connect with u.FL .
This cable is RG178 and is 15cm (5.9") long not including the SMA connector. It has a panel-mount SMA connector on the end, often used for GPS and cellular connections. Most WiFi devices/routers that have a connector use RP-SMA. Check the antenna you want to connect, and the close up image above to verify if you need RP-SMA or SMA as they are not compatible!