eppfun USB C Bluetooth Adapter Instruction Manual

Product Overview

The eppfun AK3040Pro is a versatile USB-C Bluetooth 5.2 audio adapter designed to provide wireless audio connectivity for various devices. It features low-latency audio transmission, a bundled analog microphone for voice chat, and broad compatibility with gaming consoles and computers.

APTX-Adaptive Technology: Minimizes audio delay to approximately 60ms for synchronized audio and video, ideal for gaming and media consumption.
Advanced Bluetooth 5.2: Offers enhanced stability, faster speeds, and extended range compared to older Bluetooth versions.
Wireless Communication: Includes a mini analog microphone for clear voice chat.
Plug & Play: Simple setup without the need for driver installation.
Audio Codec Support: Supports aptxX-LL, SBC, Aptx, Aptx adaptive, and Aptx-HD. Note that your headphones must also support the same standard for optimal performance.
Broad Compatibility: Compatible with PS4/5, Windows 8/10/11, Nintendo Switch OS, Linux OS, and Mac OS.

Box Contents

Upon opening the package, you will find the following items:

1 x eppfun AK3040Pro USB C Bluetooth Adapter
1 x Analog Microphone
1 x Instruction Manual

Box contents showing the eppfun AK3040Pro adapter, analog mic, and instruction manual.

Image: Contents of the eppfun AK3040Pro package, including the adapter, microphone, and manual.

Setup Guide

The eppfun AK3040Pro is designed for easy setup, requiring no driver installation for most compatible devices.

Initial Connection and Pairing

Insert the Adapter: Plug the eppfun AK3040Pro USB-C Bluetooth adapter into an available USB 2.0/3.0 port on your device (e.g., PS5, Nintendo Switch, PC, Mac).
Image: The eppfun AK3040Pro USB C Bluetooth Adapter.
Automatic Pairing Mode: For the first time use, the LED indicator on the adapter will automatically flash red and blue, indicating it has entered pairing mode.

Image: The eppfun AK3040Pro adapter connected to a laptop, illustrating its plug-and-play functionality.
Pair with Your Audio Device: Put your Bluetooth headphones or speaker into their pairing mode. The adapter will automatically connect to your device. Once successfully paired, the LED indicator will remain steadily lit.
Image: The eppfun AK3040Pro adapter connected to a PS5, demonstrating its use as a gaming companion.
Connect the Analog Microphone: If you intend to use voice chat, plug the included mini analog microphone into the 3.5mm jack on your controller (e.g., PS5 controller) or directly into the adapter if it has a dedicated port for it.
Image: Multi-device compatibility diagram for the eppfun AK3040Pro, highlighting its use with audio devices and various platforms.

Operating Instructions

Codec Selection

The AK3040Pro supports multiple audio codecs. You can switch between them by pressing the button on the adapter. The LED indicator color will change to reflect the active codec:

Aptx Adaptive: Orange LED
Aptx HD: Green LED
Aptx LL: White LED
Aptx: Cyan color LED
SBC: Blue LED

Diagram showing the eppfun adapter with a finger pressing its button, and a legend for LED indicator colors corresponding to different audio codecs.

Image: Codec indicator and selection guide for the eppfun AK3040Pro, showing how to switch codecs via the button.

eppfun adapter connected to a PS5 console with a wireless signal radiating from it.

Image: The eppfun AK3040Pro adapter connected to a PS5, demonstrating its use as a gaming companion.

Duplex Mode (Game Call + Music)

When using the adapter with PS4 or PS5, it may automatically switch to "Duplex mode" for game calls and music. In this mode, the audio quality might decrease, potentially with some sizzling noise.

To switch back to music-only mode (if not needed for calls), double-click the button on the adapter.

A person playing Nintendo Switch with the eppfun adapter plugged in.

Image: The eppfun AK3040Pro adapter connected to a Nintendo Switch, enabling wireless audio for gaming.

Maintenance

To ensure the longevity and optimal performance of your eppfun AK3040Pro adapter, please follow these simple maintenance guidelines:

Cleaning: Use a soft, dry cloth to wipe the adapter. Avoid using liquid cleaners or abrasive materials.
Storage: Store the adapter in a cool, dry place away from direct sunlight and extreme temperatures.
Handling: Handle the adapter gently. Avoid dropping it or subjecting it to strong impacts.
Port Care: Ensure the USB-C port and the 3.5mm jack (if used for the mic) are free from dust and debris.

Troubleshooting

If you encounter issues with your eppfun AK3040Pro, please refer to the following common solutions:

Cannot Pair or Connect:
If your headphones have been previously connected to other Bluetooth devices, their internal Bluetooth connection information might not be automatically cleared. To resolve this, you need to reset your headphones and clear any previous pairing information before attempting to match them with the AK3040Pro. This is especially common with high-end Bluetooth earphones like Apple or Beat earphones.
Poor or Intermittent Sound Quality:
The sound quality can be affected by the audio decoding codec in use. If you experience poor or intermittent sound, try switching the audio decoding codec by pressing the button on the adapter. Ensure your headphones also support the selected codec for optimal performance. The product supports APTX/APTX LL/SBC/APTX HD/APTX adaptive.
Duplex Mode Audio Issues (PS4/PS5):
When connected to PS4 or PS5, the adapter may automatically enter Duplex mode (game call + music), which can result in decreased music quality or sizzling noise. To return to music-only mode, double-click the button on the adapter.

A note section with frequently asked questions regarding pairing and sound quality issues.

Image: Troubleshooting tips for common issues like pairing and sound quality.

Specifications

Feature	Detail
Brand	eppfun
Model Number	AK3040Pro
Hardware Interface	USB Type C
Data Link Protocol	Bluetooth, USB
Bluetooth Version	5.2
Supported Audio Codecs	aptxX-LL, SBC, Aptx, Aptx adaptive, Aptx-HD
Compatible Devices	Desktop, Game Console, Headphone, Smartphone, Windows, Mac OS, PS4, PS5, Nintendo Switch, Linux
Item Weight	0.32 ounces (approx. 9 grams)
Package Dimensions	4.84 x 3.58 x 0.67 inches

Warranty and Support

eppfun is committed to providing high-quality audio and video products. If you encounter any issues that cannot be resolved using the troubleshooting guide, or if you have questions regarding product quality or infringement, please contact our customer service.

For further assistance, you can visit our official website or contact us via email:

Website: www.eppfun.com
Email: service@eppfun.com

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation.