PV-Cables Multi-Contact MC3 Solarline 1 Connector Female #10AWG, 33.1003 Multi-Contact MC3 Connector with Boot for 3 to 5mm OD 32.0001UR Male or Female? At first glance, the distinction between male and female connectors is somewhat counter-intuitive. "Male" or "female" refers to the metal pins inside rather than the housing of the connectors. The housing of the male connector has a large opening at the end with the actual pin inside. The connector of the female pin, however, has a long tip goes fits into male connector when the two are mated. If you have any questions before you make a purchase, give us a call so we can help you understand the difference between the two!