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Small rectangular adapter with USB-C plug, DC barrel jack and LED wattage display

Fervit

Fervit USB-C to DC 4.8x1.7mm HP Barrel Jack PD 100W Adapter with Wattage Display

SKU CH-1V3Y-4KH1B

Converts USB-C PD to a 4.8×1.7 mm HP barrel jack at up to 100 W with real-time voltage, current and wattage display

  • Real-time voltage, current and power shown on LED display
  • Up to 100W 20V 5A delivery from USB-C PD source
  • Works with 65W chargers and 18.5V to 20.5V DC devices
  • Compact alloy housing protects the plug for travel
  • Fits HP 4.8mm x 1.7mm barrel jack laptops

USB-C to HP Barrel Jack Adapter

This Fervit adapter converts a USB-C Power Delivery source into a 4.8x1.7mm DC barrel jack for compatible HP laptops. It accepts up to 100W input and delivers a maximum of 20V 5A output. The built-in LED screen shows real-time voltage, current and wattage during charging. It is intended for users who want to power their barrel-jack laptop from a modern USB-C charger.

Sustained 100W Delivery and Voltage Range

The unit maintains up to 100W continuously provided the connected charger and cable are also rated for 100W or higher. It negotiates PD and QC 2.0 or 3.0 profiles to reach 20V 5A, and also supports 65W operation across an 18.5V to 20.5V output window. The alloy housing helps dissipate heat during prolonged high-load sessions.

Plug-and-Play Fit and Common Pitfalls

Installation is straightforward: connect the USB-C male end to the charger and the DC male tip to the laptop. The adapter is fully passive with no drivers required. The most frequent issue is attempting 100W output with an under-rated charger or cable, which limits power to a lower profile. Users must also verify the laptop uses the exact 4.8x1.7mm barrel size, as other HP models use different dimensions.

Highlights

  • Real-time voltage, current and power shown on LED display
  • Up to 100W 20V 5A delivery from USB-C PD source
  • Works with 65W chargers and 18.5V to 20.5V DC devices
  • Compact alloy housing protects the plug for travel
  • Fits HP 4.8mm x 1.7mm barrel jack laptops

Specifications

BrandFervit

Questions about this item

Does the adapter get hot or make noise when running at 100W all day?

The aluminium-alloy shell dissipates heat passively and the unit has no moving parts, so it runs silently without a fan.

What charger and cable do I already need to reach 100W output?

A USB-C PD charger rated 100W or higher and a 100W-capable USB-C cable are required; lower-rated gear limits output to 65W.

Will this work with my older HP laptop that uses a 4.8×1.7mm barrel jack?

Yes, the DC male plug matches the 4.8×1.7mm HP barrel size and supports 18.5V–20.5V operation for compatible models.

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