Both these connectors are used to connect antenna to Mini PCI cards.
Wikipedia does not explain the difference between those naming issues:
U.FL, IPEX, IPAX, IPX,[1] AMC, MHF and UMCC is a miniature RF connector for high-frequency signals up to 6 GHz manufactured by Hirose Electric Group[2] and others. https://en.wikipedia.org/wiki/Hirose_U.FL
An acquaintance told me it's just a difference in the brand name. IPEX connectors are a bit cheaper and easier to obtain than U.FL (at least in China, it seems). Is it true? I cannot find any relevant information on the net or in the relevant datasheets.
Thanks.