What kind of connectors are used to connect a PC power supply to a hard drive?

What kind of connectors are used to connect a PC power supply to a hard drive?

• AT
• Mini-molex
• Molex
• P9 

EXPLANATION

 Molex connector is the vernacular term for a two-piece pin and socket interconnection. Pioneered by Molex Connector Company, the two-piece design became an early electronic standard. Molex developed and patented the first examples of this connector style in the late 1950s and early 1960s. First used in home appliances, other industries soon began designing it into their products from automobiles to vending machines to mini-computers.