It is 2 pole combination of speakON socket and 1/4" jack receptacle, horizontal pcb mount, same pcb footprint and panel cut out as NL4MD-H. First speakON / jack hybrid panel mount connector combining the speakON chassis connector with a 1/4" 2 pole jack socket permitting connection using either type of plug. The speakON Combo mates with all 2- and 4-pole speakON cable connectors and 1/4" jack plugs utilizing 2 contacts.