An electrical connector includes a female connector removably connectable with a male connector. The female connector includes an outer ring shield, and first and second ring insulator. The first ring insulator is spaced inwardly of the outer ring shield to define a first recess with a first female electrical contact provided in the first recess. The second ring insulator is spaced inwardly of the first ring insulator to define a second recess with a second female electrical contact provided in the second recess. The male connector includes first and second. When the male and female connectors are electrically connected, the first and second male electrical contacts are received in the first and second recesses respectively.