FYSETC Vorn 2.4 Upgrade Extruder System ERCF(EnragedRabbit Carrot Feeder) Support Multimaterial Switch No Printed Part with Self-Produced ERB Module(ERP2040) Compatible Vorn 3D Printers-6 Channels

Package includes All the necessary accessories, no printed parts.

You need to print them and assemble it by yourself.

Caution: If only connect the board to computer via USB cable, your computer can't detect it.

Now, First, please add a jumper cap to connect Pins 5V and U5V(Pins name can be found on boards' back), connect the USB.

Then the board is powered, you can find the blue light on.

And there occurs a device( Serial Interface) on the computer.

The function of jumper cap is for us to conveniently burn firmware, we don't need to screw the power supply wire one by one.

Because we burn firmware into all boards well at our factory, By the way, if still want to burn firmware, here're 2 methods: 1, Using a jumper cap(5V & U5V), Press the Bootsel key, connect USB cable.

Please Keep the bootsel pressed till the computer responds.

Then, you can see a U disk showing on your computer.

Now you can process burning.

2, If the board powers on by connecting the power supply, the blue light on means the board is OK.

then Press the Bootsel key, hold it, and Press the RST key one or two times.

Here you still need to hold pressing the bootsel key 3-5s.

Then you can find the U disk on your computer.