Model 3141 Documentation and Downloads

Model 3141 USB4™ Switch Documentation and Downloads

Overview

The MCCI® Model 3141 USB4™ Switch is a computer-controlled programmable 2:1 switch, connecting two USB Type-C® receptacles to a single Type-C plug. It is compatible with USB4 hosts and devices, as well as other protocols such as Thunderbolt™ 3, USB 3.2 gen2 or gen1, USB 2.0, USB Type-C Alternate Modes, and of course Power Delivery.  

                                                                      

MCCI Cricket UI Support

MCCI developed and released a convenient and user-friendly software "MCCI Cricket UI" control the Model 3141 USB4 Switch along with our other USB Switches and Connection Exercisers.

Use Cricket UI to:

  • Detect connected MCCI devices

  • Control switch operation

  • Update device firmware


Download: MCCI Cricket UI (Windows, Linux, macOS)

MCCI Cricketlib Support

MCCI Cricketlib is a Simple python library for detecting and controlling MCCI USB Switches (Model 3141,3142,2101,2301,3201) and related device. designed for basic control and automation use.

Technical Documentation

The following technical documents are available for download:

  1.  Model 3141 Datasheet
  2.  Model 3141 User Manual

Firmware Update Instructions (Model 3141)

Follow the steps below to update the firmware on y
our Model 3141 USB4 Switch.

  1. Download the latest Model 3141 firmware (.hex) file from the attachments on this page.

  2. Download and install the latest version of MCCI Cricket UI (Windows, Linux, or macOS).

  3. Launch MCCI Cricket UI.

  4. From the menu, select Tools → Model 3141/3142 Firmware Update.

  5. Click Search to detect connected devices.

  6. Select the detected Model 3141 Switch.

  7. Click Load, choose the downloaded firmware HEX file, and start the update.

  8. Wait for the update process to complete before disconnecting the device.

Note: Do not disconnect power or USB cables during the firmware update.


                                                                            

Latest Firmware

  • Current firmware version: v0201

Portal Update History

Update 2026-01-02 18:27:00 IST

Update the Model 3141 Documents link and added the firmware update instructions

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