1. Introduction
This manual provides essential information for the proper installation, operation, and maintenance of your Victron Energy MK3-USB-C Interface. The MK3-USB-C is designed to facilitate communication between Victron VE.Bus products and a computer or GX device via a USB-C connection, enabling configuration, monitoring, and firmware updates.
2. Safety Information
Always observe general safety precautions when working with electrical equipment. Ensure all connections are secure and correctly polarized. This device is intended for use with Victron Energy products. Refer to the manuals of connected devices for specific safety guidelines.
3. Package Contents
Verify that all items are present in the package:
- 1x Victron Energy MK3-USB-C Interface (Model: ASS030140030)
4. Product Overview
The Victron Energy MK3-USB-C Interface (Part Number: ASS030140030, Serial Number: HQ2307XMGRH) is a compact device that bridges the communication gap between Victron VE.Bus products and modern computing devices equipped with USB-C ports. It features an RJ45 connector for VE.Bus communication and an integrated USB-C cable for connection to your computer or GX device.


5. Setup and Connection
To set up the MK3-USB-C Interface, follow these steps:
- Connect to VE.Bus Device: Plug the RJ45 connector of the MK3-USB-C Interface into the VE.Bus communication port of your Victron inverter, charger, or other compatible VE.Bus product.
- Connect to Computer/GX Device: Plug the integrated USB-C cable into an available USB-C port on your computer (laptop, desktop) or a Victron GX device.
- Software Installation: The MK3-USB-C is generally plug-and-play and does not require specific driver installations for most operating systems. For configuration and monitoring, download and install the VictronConnect software from the official Victron Energy website.

6. Operating with VictronConnect
The MK3-USB-C Interface is primarily used with the VictronConnect software for configuration, monitoring, and firmware updates of compatible Victron products.
6.1. Firmware Updates
The MK3-USB-C supports firmware updates for your Victron VE.Bus devices. When connected, VictronConnect will automatically suggest firmware updates if available, simplifying the process for new system configurations.

6.2. Real-time Monitoring
VictronConnect allows you to obtain real-time and historical data from any Victron product connected via USB, Bluetooth, or local area network through a GX Device. The software is available for iOS, Android, Windows, and Mac, offering an intuitive interface for comprehensive system oversight.


7. Compatibility
The Victron Energy MK3-USB-C Interface is compatible with the following Victron VE.Bus products:
- MultiPlus (including Compact)
- MultiGrid
- EasySolar
- MultiPlus-II
- Quattros
- EasySolar-II
- MultiPlus-II GX
- Phoenix Inverters with a VE.Bus port
- EasySolar-II GX
8. Maintenance
The MK3-USB-C Interface requires minimal maintenance. Keep the device clean and dry. Avoid exposing it to extreme temperatures or moisture. Ensure the connectors are free from dust and debris to maintain reliable communication.
9. Troubleshooting
If you encounter issues with the MK3-USB-C Interface, consider the following:
- Connection Issues: Ensure both the RJ45 and USB-C cables are securely connected. Try a different USB-C port on your computer or GX device.
- Software Not Detecting Device: Verify that VictronConnect software is installed correctly and is the latest version. Restart the software and/or your computer.
- Firmware Update Failure: Ensure a stable power supply to the VE.Bus device during firmware updates. Do not disconnect the MK3-USB-C during the update process.
- Compatibility: Confirm that your Victron VE.Bus product is listed as compatible with the MK3-USB-C Interface.
10. Specifications
| Feature | Specification |
|---|---|
| Model Number | ASS030140030 |
| Product Dimensions | 1.57 x 3.31 x 4.92 inches |
| Item Weight | 3.52 ounces |
| Brand | Victron Energy |
| Connector Type | USB Type C (integrated cable) |
| Compatible Devices | Desktop, Laptops, Victron GX Devices |
| Included Components | Interface MK3-USB-C |
| Material | Metal, Plastic |
| Output Voltage | 5 Volts (USB power) |
11. Important Notice: Use by Licensed Professionals
WARNING: The features and configuration options accessible via this interface are powerful tools. They are intended for use by Victron-trained Engineers, Installers, and Dealers. Usage by untrained system owners and users is not recommended.
Configuring Victron Inverter/Chargers, such as MultiPlus and Quattro models, requires specialized training and experience. Victron Energy does not offer direct support for individuals without proper training attempting configuration. Settings are often protected by a password, which is provided during Victron training. Please contact your authorized Victron Distributor for further information and training resources.

12. Warranty
Victron Energy products are covered by a limited warranty. For detailed warranty terms and conditions, please refer to the official Victron Energy website or contact your authorized dealer. Keep your proof of purchase for warranty claims.
13. Support
For technical assistance, product information, or support, please visit the official Victron Energy website or contact your local Victron Energy dealer or distributor. Comprehensive documentation and support resources are available online.





