No name USB-C to Dell 7.4×5.0 mm Laptop Power Cable, 18.5–20V, 100W, 1.8 m

This USB-C to Dell 7.4×5.0 mm laptop power cable converts USB-C Power Delivery output into a Dell-compatible barrel connector, enabling charging and operation of laptops that accept a 7.4×5.0 mm input. The cable supports output voltages in the 18.5–20V range and up to 100W of power delivery over a 1.8 m length. It is intended as a replacement or alternative solution when the original Dell power brick is unavailable or when using modern USB-C PD chargers or power banks to power a Dell laptop with a barrel input.

Advantages

The cable provides a direct and compact means to use USB-C PD sources with Dell laptops that require a 7.4×5.0 mm barrel plug, avoiding the need for the original adapter. It supports wide PD compatibility within the 18.5–20V range and up to 100W, allowing charging under typical laptop power requirements. The 1.8 m length offers flexible placement between charger and device while maintaining a single-cable solution for power delivery.

Suitable for

• Charging Dell laptops that accept a 7.4×5.0 mm barrel connector from USB-C PD chargers or power banks
• Temporary replacement of a lost or damaged Dell power adapter
• Using modern USB-C PD chargers with legacy Dell laptops in travel or office environments

Key specifications

• Input type: USB-C Power Delivery source
• Output connector: Dell 7.4×5.0 mm barrel plug
• Supported output voltage: 18.5–20 V
• Maximum power delivery: up to 100 W
• Cable length: 1.8 m
• Cable function: power delivery only (no data transfer)

How to use

Connect the USB-C plug to a compatible USB-C PD charger or power bank that supports the required voltage and power output. Insert the 7.4×5.0 mm barrel connector into the laptop's power input socket. Verify that the power source negotiates an appropriate PD profile (within 18.5–20V and sufficient wattage) and check the laptop’s charging indicator to confirm charging. Avoid using the cable with devices that require different barrel sizes or voltages outside the specified range.

Usage recommendations

Use a USB-C PD charger capable of delivering up to 100 W and confirm the charger negotiates an 18.5–20V output before prolonged use. Inspect connectors for secure fit and avoid excessive bending near the ends of the cable. Do not use the cable with incompatible barrel sizes or with devices that require voltages outside the supported range. For continued reliable operation, keep connectors clean and store the cable coiled without sharp kinks when not in use.