Power plug connector UGREEN 7.9×5.4 mm (20V/4.5A) mains with fixed cable for panel mounting

UGREEN mains power plug with fixed cable and panel-mount design provides a ready-to-install solution for delivering DC power to devices that accept a 7.9×5.4 mm barrel connector. Rated for 20 V and 4.5 A, this assembly combines a panel-mounted female inlet and an attached cable terminated with a matching 7.9×5.4 mm male DC plug. It is intended for replacing worn connector assemblies, extending existing power runs, or integrating a reliable power inlet into custom enclosures and equipment panels.

Advantages

The unit offers a fixed-cable, panel-mount format that simplifies installation and reduces the need for soldering or custom wiring. The 7.9×5.4 mm barrel plug is a common laptop-style connector, and the 20 V / 4.5 A rating supports a wide range of small to medium power electronics. A panel-mounted inlet provides mechanical stability and keeps the connection secure in regular use, while the pre-assembled cable reduces assembly time and ensures consistent electrical contact.

Suitable for

• Replacement of damaged or worn DC barrel connectors on compatible laptops and adapters
• Adding a fixed power inlet to custom enclosures, racks, or instrument panels
• Powering electronics and peripherals that require a 7.9×5.4 mm plug at 20 V and up to 4.5 A
• Prototyping and repair work where a ready-made panel-mounted power lead is needed

Key specifications

• Connector type: DC barrel plug (male) 7.9×5.4 mm
• Rated voltage: 20 V DC
• Rated current: 4.5 A
• Configuration: Panel-mount inlet with fixed cable and male plug
• Cable: Pre-assembled, insulated power cable (length varies by variant)
• Contact connection: Crimped or soldered internal termination for reliable contact

How to use

Install the panel-mount inlet into the prepared cutout on the equipment front or rear panel, securing it with the provided nut or mounting hardware. Route the fixed cable to the internal power distribution or directly to the device's power input, observing correct polarity. Connect the external 20 V DC supply to the inlet, then insert the 7.9×5.4 mm male plug into the device's DC jack. Verify that the voltage and current rating of the external power supply match the device requirements before powering on.

Usage recommendations

Use only power supplies that match the required 20 V and provide sufficient current up to 4.5 A. Ensure correct polarity when wiring and avoid exposing the cable or connector to excessive mechanical strain, moisture, or high temperatures. Periodically inspect the panel mount and cable for wear, and replace the assembly if contacts become loose or insulation is damaged.