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USB-C female to DC 4.0x1.7mm cable, slim black cord with built-in PD trigger chip

SMUGDESK

SMUGDESK USB-C Female to DC 4.0x1.7mm PD Trigger Cable 20V

SKU CH-SPR1-12FBW

Converts a USB-C PD charger to 20V DC power for laptops with a 4.0x1.7mm charging port

  • Converts USB-C PD chargers to 20V laptop power using built-in PD trigger chip
  • Powers laptops with 4.0x1.7mm DC ports from portable USB-C adapters
  • Built-in protection against overvoltage, overcurrent, overheating and short circuit
  • Slim lightweight design fits easily in backpacks for travel and outdoor work
  • Charging-only cable requires PD USB-C supply; verify laptop voltage and port size first

Portable laptop charging adapter

This USB-C female to DC 4.0x1.7mm cable lets you power laptops with a compatible barrel jack using a standard USB-C PD charger. It targets mobile professionals who want to leave the original power brick at home and charge from a single compact adapter. The built-in trigger chip handles the handshake so the charger delivers the correct voltage. No data lines are present, so the cable serves only as a power path.

Thermal and electrical behaviour

The emulator chip negotiates a fixed 20 V output and includes over-voltage, over-current, over-temperature and short-circuit protection circuits. Because the unit has no active cooling, it runs silently and adds negligible heat to the charger or laptop during normal operation. Power draw matches the connected laptop’s demand up to the charger’s rated limit. The slim profile keeps cable routing tidy on a desk or in a bag.

Upgrade context and limits

This cable replaces a proprietary barrel-type AC adapter when you already own a USB-C PD source capable of supplying 20 V. It is not suitable for laptops that require a different voltage or a DC plug size other than 4.0x1.7mm. Buyers who need data transfer, video output or charging at voltages other than 20 V should look for a full-featured USB-C dock or multi-voltage trigger cable instead.

Highlights

  • Converts USB-C PD chargers to 20V laptop power using built-in PD trigger chip
  • Powers laptops with 4.0x1.7mm DC ports from portable USB-C adapters
  • Built-in protection against overvoltage, overcurrent, overheating and short circuit
  • Slim lightweight design fits easily in backpacks for travel and outdoor work
  • Charging-only cable requires PD USB-C supply; verify laptop voltage and port size first

Specifications

No published specifications for this item yet.

Questions about this item

How do I connect this cable to my laptop and PD charger correctly?

Plug the USB-C female end into your PD power adapter first, then insert the DC 4.0x1.7mm connector into the laptop charging port.

Will the PD trigger chip or cable wear out and need replacement?

The built-in intelligent PD trigger emulator chip and safety circuits are designed for continuous operation without scheduled replacement.

What happens if I use this cable with a charger that cannot supply 20V?

The cable only outputs stable 20V DC; it requires a PD USB-C power supply that can negotiate that voltage to function.

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