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Black cable with 7.4mm DC plug to USB-C connector and LED display

SMUGDESK

SMUGDESK DC Jack 7.4x5.0mm to USB-C 140W LED Display Cable

SKU CH-MGVS-0FNCQ

Converts a 7.4×5.0 mm DC jack to USB-C with 140 W PD charging and real-time LED voltage display

  • Converts 7.4×5.0mm DC jack to USB-C for cross-device charging
  • Delivers up to 140W with PD 5V/9V/20V 7A fast charging
  • Smart LED display shows real-time voltage for safe monitoring
  • Works with laptops, phones and other PD-enabled USB-C devices
  • Built-in protection guards against overvoltage, overcurrent and short circuits

Cross-Device Power Conversion

This cable converts a 7.4×5.0mm DC jack input into a USB-C output, enabling power delivery between different device types. It serves users who need to charge USB-C laptops or phones from an existing DC power source. The adapter supports a maximum output of 140W for compatible hardware.

PD Voltage and Current Limits

Power Delivery operates at fixed profiles of 5V, 9V, and 20V with a peak current of 7A. The 140W ceiling is only reached when the source and the attached device both negotiate the highest supported level. Lower negotiations will reduce the available wattage accordingly.

Built-In Monitoring and Protection

A smart LED display shows real-time voltage so you can verify the active power level at a glance. Integrated circuitry guards against overvoltage, overcurrent, and short-circuit events during daily use. The fixed 7.4×5.0mm plug and USB-C connector determine which devices can be connected directly.

Highlights

  • Converts 7.4×5.0mm DC jack to USB-C for cross-device charging
  • Delivers up to 140W with PD 5V/9V/20V 7A fast charging
  • Smart LED display shows real-time voltage for safe monitoring
  • Works with laptops, phones and other PD-enabled USB-C devices
  • Built-in protection guards against overvoltage, overcurrent and short circuits

Specifications

No published specifications for this item yet.

Questions about this item

Should I pick the 7.4×5.0 mm DC jack version or a different connector size?

This cable uses a fixed 7.4×5.0 mm DC input; choose it only if your power adapter has that exact barrel size.

What does the 140 W rating mean when I plug it into my laptop?

It delivers up to 140 W through PD profiles of 5 V, 9 V or 20 V at 7 A, so your laptop must request one of those voltages to reach full speed.

Which USB‑C standard limits the actual power I can draw?

The cable follows USB Power Delivery up to 20 V / 7 A, capping output at 140 W regardless of the source capability.

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