Setup Guide

Follow these steps to get your MAKCU device up and running.

Update MAKCU firmware with MAKCU Toolkit (formerly the diagnostic tool): https://makcu.com/toolkit/

Requirements

  • CH343 Driver Installed

    MAKCU requires the CH343 USB-to-serial driver to be loaded on your computer (the computer you will use for flashing). The driver download link is provided in the section below.

  • Correct COM Port

    The COM port for USB 2 should be below 10. If your COM port number is 10 or higher, you may experience connection issues.

  • Baud Rate

    Baud rate is matched to the software you will use, please see the baud rate section in the information page.

  • Both Chips Flashed

    Make sure both MAKCU chips are set up and flashed: the USB1 chip (to the game PC) and the USB3 chip (mouse/controller).

  • Supported Device

    Ensure a supported mouse/controller (or keyboard) is connected to USB 3.

1. Install CH343 Driver

Install the CH343 driver on your PC (the computer you will use for flashing).

  1. Download the CH343 driver from the link below
  2. Run the installer on your PC
  3. Follow the installation wizard to complete the setup
Download CH343 Driver

2. Update MAKCU Firmware

Pick the route that matches your board:

Flash Mode vs Normal Mode

Understanding how MAKCU works with its 2 chips and 3 USB ports.

MAKCU Structure

MAKCU has 2 chips and 3 USB ports. USB port 1 and USB port 3 are connected to the 2 chips. USB port 2 is the COM port used to send commands to MAKCU while in normal use mode.

Flash Mode

Flash mode is used only when updating the firmware on MAKCU.

How to Enter Flash Mode:

  1. Hold down the button next to the port you are flashing (the button next to USB1 for the USB1 chip, the button next to USB3 for the USB3 chip)
  2. Connect the USB cable to that port (USB1 or USB3)
  3. Once you hear the USB connection sound on your PC, release the button
  4. The device will now appear on your PC in flash mode

Important: If the button is NOT held down when the cable is connected, the device will NOT show up on your PC.

Note: In flash mode, you should only use ONE cable to perform flashing. Do not connect multiple USB cables at the same time.

Normal Mode

This is how MAKCU is used during normal operation.

Normal Mode Connections:

  • USB 1 → Connected to your gaming PC
  • USB 2 → COM port (used for sending commands to MAKCU)
  • USB 3 → Connected to your mouse/controller

Important: In normal mode, MAKCU can be tested and adjusted. You do NOT need to flash USB 2, and you do NOT hold any buttons down to use normal mode.

Ports and Power

How the cables are connected in each mode, and what MAKCU powers.

Normal Mode:

Connect USB1 to the game PC, USB2 to the PC running your software, and your mouse/controller to USB3. MAKCU powers the mouse/controller on USB3, with over-current protection. A high-power device (for example some controllers, or mice with bright lighting) can exceed the limit; it may then keep dropping out or its lights may stay off.

Flash Mode:

Flash mode uses one cable at a time: USB1 or USB3. Each chip is flashed separately.

Warning: If a mouse/controller on USB3 keeps disconnecting or its lights stay off, it may be drawing more power than MAKCU's USB3 port allows; try another device to check.

Problem:

Cannot use settings when device is in flash mode, or cannot flash when device is in normal mode.

Solution:

To enter flash mode: Hold the button, connect USB cable, wait for USB sound, then release button. To use normal mode: Connect USB 1 to gaming PC, USB 2 for COM port, and USB 3 to mouse/controller - no buttons need to be held.