BMW 1 3 5 7 Series E81 E87 E90 E91 E92 F01 USB USB Hub Audio Interface Module

BMW 1 3 5 7 Series E81 E87 E90 E91 E92 F01 USB USB Hub Audio Interface Module is an original component from the Electronic control modules and controllers group, designed for integrating USB functions in selected BMW 1 and 3 Series models. This used controller allows for a cost-effective restoration of the factory multimedia system or its replacement in the event of a failure.

Specifications and technical data

• SKU: 9123739
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9123739
• Category: ECUs & Computer Modules

Module purpose and function

The presented BMW 1 3 5 7 Series E81 E87 E90 E91 E92 F01 USB USB Hub Audio Interface Module is responsible for managing the vehicle's USB port, enabling communication between the car's electrical system and external devices. It is a comfort and infotainment system component that allows for stable use of audio, data, and power functions within the factory BMW electronic architecture. As a part from the Electronic control modules and controllers category, the controller works with other electronic units in the vehicle, ensuring correct signal exchange and compatibility with the communication bus used in the specific model.

Benefits of using an original BMW controller

Using an original USB module in BMW E81, E87, E90, and E92 series models allows you to maintain the factory system logic and ensure a perfect fit with the existing wiring harness. This solution reduces the risk of compatibility issues that may occur with aftermarket replacements or non-adapted universal modules.

• Factory fit for the vehicle's electrical installation and architecture.
• Consistent cooperation with other controllers in the car.
• Ability to restore full USB port functionality after a previous module failure.
• Reasonable repair cost through the use of a pre-owned part. For many users, it is important that the used controller allows for maintaining original equipment without the need for interfering with the installation or using additional adapters.

Condition and installation aspects

The item is offered as a used part, meaning it has been removed from a vehicle and was previously in operation. This type of solution is often chosen for electronics repairs when the cost-to-functionality ratio and maintaining the original manufacturer's specifications are prioritized. During installation, it is recommended that the work be performed by an automotive electrician or a workshop with experience in BMW electronics. Proper connection to the wiring harness and configuration in the vehicle (if required) are crucial for the stable operation of the module and to avoid system errors.

Choosing a used module and technical advice

When selecting a used USB controller for a BMW, it is worth paying attention to compatibility with the specific equipment version and the vehicle's production year. In practice, this means verifying the technical parameters and module markings against the car's data to ensure full cooperation with the existing multimedia system and electrical installation. If you want to better understand when choosing a used controller is justified and how to minimize risks when purchasing second-hand electronics, check out our guide: A second life for electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?

Expanding the BMW electronics system

If you are planning a comprehensive repair or upgrade of your BMW's onboard electronics and need other components from the same group, such as comfort modules, light controllers, or multimedia system control units, check out the available parts in the BMW electronic control modules and controllers category. This allows you to select a coherent set of electronic components in one place, which facilitates servicing, speeds up diagnostics, and helps maintain a uniform, factory-standard architecture of the systems in your car.