Adapter Kit If you have any doubts whether you need a Gender Changer or a Null Modem Adapter, this Adapter Kit provides both Null Modem & Gender Changer Adapters that will allow you to make sure that you get the right adapter for your application. This DB9 Adapter Kit includes the following adapters... Female to female mini gender changer Male to male mini gender changer Female to female mini null modem adapter Male to male mini null modem adapter