A panel-mountable header connector (100) includes conductors (106) and a housing (104). The housing (104) holds the conductors (106) in a cavity (108) of the housing (104). The housing (104) has a front end (110) and a rear end (112). The housing (104) has a latch set (116) and a stop feature (118) which define a panel mounting zone (120) there between. The panel mounting zone (120) is configured to align with an opening (122) in a panel (102) when the housing (104) is mounted to the panel (102). The latch set (116) is configured to engage a front side (124) of the panel (102), and the stop feature (118) is configured to engage a rear side (126) of the panel (102) to retain the panel (102) in the panel mounting zone (120). At least one of the latch set (116) or the stop feature (118) is stepped such that a width of the panel mounting zone (120) is variable to accommodate the panel (102) having one of multiple thicknesses.
