Berg connector

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Rear side of 3 12-inch floppy drive. Power (left) and data (right)

Berg connector is a brand of electrical connector used in computer hardware. Berg connectors are manufactured by Berg Electronics Corporation of St. Louis, Missouri, a division of Framatome Connectors International.


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 ​3 12-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.

Floppy drive power connector[edit]

Floppy Drive Power Connector
Atx molex mini.jpg
Type Electrical
Designer Berg Electronics Corporation
Pins 4
Signal Yes
Pin Color Type
Pin 1 Red +5 V
Pin 2 Black Ground
Pin 3 Black Ground
Pin 4 Yellow +12 V

The power connector on the ​3 12-inch floppy drive, informally known as "the Berg connector", is 2.50 mm pitch (distance from center to center of pins).

The power cable from the ATX power supply consists of 20 AWG wire to a 4-pin female connector.[1] The plastic connector housing is TE Connectivity / AMP 171822-4 with female metal contact pins are choice of TE Connectivity / AMP 170204-* or 170262-*, where * is 1 or 2 or 4.[2][3]

The male PCB connector on the ​3 12-inch floppy drive is a polarized right-angle male header, which is a TE Connectivity / AMP 171826-4,[4] the vertical model is AMP 171825-4.[5]

See also[edit]


External links[edit]

  • FCI, the current owner of Berg.