Original PCBA_G_K1-MAX K1_T9_GD32F303CBT6 NOZZLE-C-V13 HQPCB-2 Adapter Board PCBA Breakout Module Replacement Compatible with Creality K1 K1 MAX 3D Printer Accessories

Perfect item. I've seen a lot of people ask the question does it work with the K1C and it does, as I've just fitted it.

Great price but be careful on compatibility with hot end as there are two variants in the k1 unicorn hot end version I bought my machine in 2025 but the 2024 version has different hot end board connections and you will have thermistor error check creality website for compatibility between board and hot end don’t force it it won’t work trust me lol I hope this helps someone who runs into the same issue as i did

Fitted works well

It's easy to change this board. The original PCB header plugs have their sockets glued in but a hairdryer or heat gun can be used to soften the adhesive for removal. Be very careful to note the correct placement of the stepper motor and front fan sockets as they are interchangeable. If they are accidentally transposed, it can lead to a dissatisfying time until the issue is identified. I replaced the original three screws that secure this board with these: https://amzn.to/4agq2rp as I've found the original cap-heads are prone to slip.

After a big ball of plastic, replaced the complete hot end, extruder/stepper, and this board. The hot end thermister DOES NOT FIT. Being an electronics guy, managed to modify thermister plug, then glued in. Also the new stepper plug didn't click in firmly. more hot glue.

The media could not be loaded. The module does not work!!!

This appears good but it didn't fix the issue i have. I've had this before with cheap parts. I can't say for definite if it is a problem with the product, but in future I would just pay extra for official parts.