Evan Harmon - Memex

U.FL (I-PEX)

img Hirose U.FL, I-PEX MHF I, AMC or UMCC is a miniature RF connector for high-frequency signals up to 6 GHz manufactured by Hirose Electric Group, I-PEX, and others.
wikipedia:: Hirose U.FL

antenna - Difference between Hirose U.FL and IPEX connectors - Electrical Engineering Stack Exchange
Yes, IPEX is a line/type of connectors made by LTI (LightHorse Technologies Inc). As @Passerby pointed out, IPEX mhf connector is the equivalent of Hiroshi U.fl (according to this website they are 100% compatible: http://www.wellshow.com/rf-connectors/mini-connector/ipex-mhf-connector/)

U.FL (I-PEX)
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U.FL (I-PEX)