A numbering scheme for the cavities of a hermaphroditic connector includes indicia on the rear wall of the connector having one or more horizontal rows (n), each row having the same number of cavities (m). A first indicium on the rear face of the rear wall near the cavity at the upper left in a first orientation of the rear wall has an inverted numeral corresponding to the value of ((m)×(n−1)+1)) adjacent to the upright numeral “1.” A second indicium on the rear face of said rear wall near the cavity at the upper right in the first orientation of the rear wall has an upright numeral corresponding to the value of m adjacent to the inverted numeral corresponding to the total number of cavities, which has value m×n. The other cavities may also have indicia following this. The indicia may also contain non-numerical symbols.