Servers by jDrones

XL-MaxSonar-EZ0 with adc 3.3 port

I’m using XL-MaxSonar-EZ0 sonar in my pixhawk but can not find the connector port adc 3.3 recommended by ardupilot site ( http://ardupilot.org/copter/docs/common-rangefinder-maxbotix-analog.html )
where can I buy this connector ?
tanks

Servers by jDrones