Usually Male, Female, or Blunt.
Male: The connector contacts are usually pin style.
Female: The connector contacts are usually socket style.
Blunt: The end of the cable is unterminated.
You may be asked to choose the gender of the connectors at both ends (Connector 1 and Connector 2) of the cable. This is indicated in the drop-down box by a slash (/). The gender specified on the left of the slash is for Connector 1 and the gender specified on the right of the slash is for Connector 2. Example: choosing "Male / Female" would indicate Connector 1 is to be Male and Connector 2 is to be Female.