Molex 8981 Series / IEC 60950

Molex 4-Pin Peripheral Power Pinout

The 4-pin Molex 8981 peripheral connector delivers +12 V and +5 V power to internal PC drives and accessories through 5.08 mm pitch pins. Select a pin to inspect its line.

Pin assignment

Pin 1: +12V1Pin 2: GND2Pin 3: GND3Pin 4: +5V4Pin 1: +12V1Pin 2: GND2Pin 3: GND3Pin 4: +5V4
  • Power
  • Ground

Schematic face view, not to scale · numbering per Molex 8981 Series / IEC 60950

Pin assignment of Molex 4-Pin Peripheral Power Connector
PinSignalFunctionStatus
+12V+12 VDC Power Rail (Yellow wire)Standard
GNDGround Return for +12 V line (Black wire)Standard
GNDGround Return for +5 V line (Black wire)Standard
+5V+5 VDC Power Rail (Red wire)Standard

Pin details

Select a pin on the diagram or table for full details.

Pin details

About this connector

Standard 4-pin Molex 8981 peripheral power connector providing +12 V and +5 V supply rails for disk drives and cooling accessories.

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