Final answer:
The L-shaped power connector is the SATA power connector, used for connecting drives to a computer's power supply.
Step-by-step explanation:
The type of power connector that is L-shaped is the SATA power connector, which stands for Serial ATA. The SATA connector is used to connect hard drives, solid state drives, and optical drives to the computer's power supply. Unlike the older Molex connectors, which are more rectangular, the SATA power connectors have an L-shape that ensures they can only be connected in one direction, preventing incorrect insertion which could damage the components.