IPAX is a VERY small connector. The coin shown is a UK penny to compare the sizes
It will fit all Mini PCI/Mini PCI-e cards/ wireless routers with UF.L IPAX connector

Transmission losses are estimates based upon the specifications for the cable and connectors used at 2.4GHz
For 5GHz losses you should multiply the quoted figures by approximately 1.4.
The loss figures are only intended as general guides.
Pigtails are generally suitable for wireless operation in the range 0-10GHz.

Specifications:

Approximately 45cm (1.13 cable)
IPAX/U.FL Plug
Reverse SMA Socket (male pin) RPSMA
Estimated signal loss 1.9 dB