Audio adapter QOLTEC USB-C to 3.5mm jack with PD 15W

The QOLTEC USB-C to 3.5mm jack with PD 15W is a compact audio adapter that converts a USB-C port into a standard 3.5 mm headphone output while supporting Power Delivery pass-through charging up to 15W. It is intended for smartphones, tablets and laptops that lack a built-in headphone jack and allows simultaneous wired audio use and charging. The adapter features a USB-C plug for the host device and a 3.5 mm female jack for headphones, headsets, external speakers or line-in connections.

Advantages

This audio adapter provides simultaneous audio output and charging without software installation or additional drivers. Its small footprint and lightweight design make it easy to carry and connect on the go. The integrated Power Delivery passthrough supports charging at up to 15W so users can maintain device power during long listening sessions. The adapter preserves wired audio quality for headphones and external speakers while offering broad compatibility with USB-C devices that support analog audio output via the USB-C port.

Suitable for

• Listening to music or podcasts on phones and tablets without a 3.5 mm jack
• Connecting wired headphones, headsets or external speakers to USB-C devices
• Using line-in connections for recording or playback with compatible equipment
• Charging the host device while using wired audio during travel, work or study

Key specifications

• Connector type: USB-C male to 3.5 mm female audio jack
• Power Delivery passthrough: up to 15W charging support
• Audio support: analog stereo output compatible with standard TRS/TRRS headphones
• Form factor: compact inline adapter with short cable
• Compatibility: works with devices that support audio over USB-C and PD charging

How to use

Plug the USB-C connector of the adapter into the device's USB-C port. Connect your wired headphones or a 3.5 mm audio cable to the adapter's female jack. If charging is required while listening, connect a USB-C PD charger to the device or to a USB-C port that supports passthrough power; the adapter allows charging up to 15W while audio is in use. No drivers or configuration are normally required; the operating system should detect the audio connection automatically.

Usage recommendations

Use a compatible USB-C charger that provides stable PD output up to 15W, and check the host device specifications to ensure it supports analog audio over USB-C. Avoid forcing plugs into ports and disconnect the adapter when not in use to reduce wear on device connectors.