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DC 4.0x1.7mm male plug to USB-C PD trigger cable with compact connector design

SMUGDESK

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

SKU CH-HAJA-NE7AA

Converts a 20V DC source with a 4.0x1.7mm plug into USB-C PD power for laptops and portable monitors

  • Built-in PD emulator chip negotiates power for USB-C laptops
  • 0×1.7 mm DC plug accepts 20 V input for notebook charging
  • Low-resistance wiring minimises voltage drop during extended use
  • Compact form factor simplifies DIY chassis and test-bench wiring
  • Power-only cable suits portable monitors and emergency laptop backup

DC 20V 4.0×1.7mm to USB-C PD trigger cable

This cable converts a 20V DC source into USB-C Power Delivery output for compatible laptops and portable monitors. A built-in PD emulator chip handles the negotiation so the host device recognises the power profile. The 4.0×1.7mm male barrel plug connects directly to laboratory supplies or custom power modules. It is intended for engineers, DIY builders and technicians who need a compact power conversion link.

Sustained-load behaviour with low voltage drop

High-conductivity internal wiring minimises voltage drop so the cable maintains stable output during extended notebook operation under light and moderate loads. The PD emulator continues to negotiate the correct contract without resetting when the load changes. Performance degrades if the DC source cannot supply the current the laptop actually draws. The cable itself does not limit current beyond the conductor rating.

PD protocol constraint and power-only operation

Only USB-C PD power transmission is supported; no data lines are present so the cable cannot carry video or peripheral signals. The trigger module requires exactly 20V DC input and will be damaged by other voltages. Sources lacking PD protocol support are incompatible regardless of connector fit. Users must verify the external supply rated current meets the laptop demand before connecting.

Highlights

  • Built-in PD emulator chip negotiates power for USB-C laptops
  • 0×1.7 mm DC plug accepts 20 V input for notebook charging
  • Low-resistance wiring minimises voltage drop during extended use
  • Compact form factor simplifies DIY chassis and test-bench wiring
  • Power-only cable suits portable monitors and emergency laptop backup

Specifications

No published specifications for this item yet.

Questions about this item

How much heat or voltage drop should I expect from the 4.0×1.7mm plug and cable when my laptop draws power continuously?

The internal wiring is optimised for low voltage drop and stable output during long-hour operation, keeping the cable cool under light to moderate loads.

What must my DC power supply provide for this cable to negotiate PD and charge my USB-C laptop?

A 20 V DC source capable of delivering the current your laptop requires; the cable will not work with lower voltages or non-PD chargers.

Can I use this cable with a legacy 4.0×1.7mm power brick that only outputs fixed voltage and lacks PD communication?

No, the built-in PD emulator chip requires a 20 V DC input and will not function with power supplies that do not support the PD handshake.

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