It works simply by connecting with the included cable. High-Precision Multi-Materialization Unit — BMCU-370C Black is also available! We can accommodate other color requests for an additional 500 yen and a few days. This is a completed unit, BMCU370C, which is an open-source reproduction of BambuLab's AMS Lite. It's an alternative way to achieve multi-color printing/multi-material environments without using AMS Lite. 【Product Details】 - Model: BMCU-370C - Type: 3D printer head/filament control unit - Condition: Assembled - Operation check: Tested on A1 Mini 【Important Notes】 - BMCU is a community/DIY-based project. Since it is not an official AMS, some knowledge is recommended for adjustments and settings during installation. - Before use, please check the connection method and firmware compatibility with your printer.