SMUGDESK USB-C Female to DC 4.0x1.7mm Type-C Rectangle PD Charging Cable 18V-20V

Power conversion for barrel-jack laptops

This cable converts a USB-C Power Delivery charger into a power source for laptops that use a 4.0mm by 1.7mm DC barrel connector. An integrated PD trigger chip negotiates 18V or 20V output from the charger to match the notebook's voltage requirement. It lets you replace the original bulky AC adapter with a compact USB-C GaN charger or PD power bank. Ideal for users who want a single charger for multiple devices on the go.

Build integration and portability

The USB-C female port accepts any PD-compatible charger, GaN adapter or power bank that can deliver 18V or 20V, freeing you from proprietary power bricks. A thickened copper core reduces voltage drop across the cable run while the flexible anti-break sheath withstands repeated coiling. Its slim profile slips easily into a laptop sleeve or backpack pocket, making it practical for commuting, business travel and remote-work setups where bag space is limited.

Sustained-load behaviour

Under continuous operation the integrated trigger maintains a stable 18V or 20V negotiation with the PD source, preventing voltage sag that could throttle the laptop or interrupt charging. The robust copper conductor and durable outer jacket are built to handle the thermal and mechanical stress of daily full-power charging cycles without degradation. Reliable performance depends entirely on the connected PD charger maintaining its rated high-voltage output over time.