Mercedes W177 W213 W247 USB Port Socket Plug Connector Unit MM-BOX A2478204002

The Mercedes W177 W213 W247 USB Socket Plug Connector MM-BOX Module is an original part from the switches, control elements, and ignition switches category, designed for integrating the multimedia system in selected Mercedes models. This USB module ensures a stable connection with external devices, enabling convenient use of multimedia functions and charging in the vehicle.

Specifications and technical data

• SKU: A2478204002
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2478204002
• Substitutable numbers: A2478204002, A 247 820 40 02
• Category: Switches & Controls

Purpose and Function of the MM-BOX Module

The USB Socket / Plug / Connector MM-BOX acts as an interface between the vehicle's electrical system and the portable devices of the driver and passengers. It is responsible for:

• stable wired connection with the car's multimedia system,
• secure data transfer between the vehicle and connected equipment,
• maintaining the original functionality of the connector in the console or center tunnel.

By using an original module, full compatibility with the electrical system and control logic in Mercedes cars from the W177, W213, and W247 series is maintained.

Construction and Integration with Vehicle's Electrical System

The MM-BOX USB module is designed as a component of the control and connector system within the switches, control elements, and ignition switches group. This means it works with factory wiring harnesses and control units, without requiring any modifications to the installation.

Key construction features:

• factory connector geometry matched to dedicated mounting locations in the dashboard or tunnel,
• use of original pins and contacts ensuring proper conductivity,
• housing adapted for operation in the vehicle's interior conditions (temperature fluctuations, vibrations).

Using an original module helps avoid problems typical of aftermarket parts, such as loose connections, unreliable contacts, or communication errors in the multimedia system.

Application in Mercedes Vehicles

The presented USB module is a dedicated component for selected Mercedes models where integration with the MM-BOX system is provided. Thanks to this:

• visual consistency of the interior is maintained – the socket fits factory panels,
• installation is performed in a plug-and-play manner, using original connectors,
• the system recognizes the module as a factory part, which reduces the risk of error messages.

This solution is particularly beneficial for repairs after mechanical damage to the socket, interior upgrades, or restoring the full functionality of the factory multimedia system.

Characteristics of a Used Product

The offered module comes from the used Mercedes parts segment, allowing for economical repair or replacement of the component without compromising original quality. In practice, this means:

• maintaining the factory manufacturing standard,
• better fit to the installation than many aftermarket parts,
• favorable cost-to-functionality ratio for vehicle servicing.

Choosing an original, used USB module is a sensible alternative to new parts, especially for wear-and-tear repairs and restoring the functionality of the multimedia system.

Related Products and Technical Knowledge

If you are looking for other Mercedes switches, control elements, and ignition switches, check out our dedicated category: Mercedes switches, control elements, and ignition switches. There you will find a wide selection of original components for control and interior operation systems.

When working with the vehicle's electrical system, it is also worth ensuring the safe selection of components responsible for stopping the car. In this context, a guide may be helpful: Used Braking System: How to Safely Choose Discs, Calipers, and ABS?, which discusses step-by-step the principles of selecting used components critical for safety.