Berg connector used by floppy disk drive
Overview
Berg connectors have a 2.54 mm (0.100 in) pitch, pins are 0.64 mm (0.025 in) square, and usually come as single or double row connectors.
Many types of Berg connectors exist. Some of the more familiar ones used in IBM PC compatibles are:the four-pin polarized Berg connectors used to connect 3½-inch floppy disk drive units to the power supply unit, usually referred to as simply a "floppy power connector", but often also referred to as LP4. This connector has a 2.50 mm (0.098 in) pitch (not 2.54 mm).
the two-pin Berg connectors used to connect the front panel lights, turbo switch, and reset button to the motherboard.
the two-pin Berg connectors used as jumpers for motherboard configuration.