Features:1. BMCU is an open source project. It can realize the function of ams-lite at low cost. This kit is currently compatible with A1 A1mini printers and also with the P1 series (experimental). This kit can only work in 4-channel mode, which means it cannot currently support more than 4 channels via expansion.2. Compatibility: A1, A1 mini; P1S P1P (Experimental); X1 Series (possible but unproven)3. BMCU370C Hall buffer version, it supports bidirectional buffering, its feeding is softer and less likely to cause damage to the filamenthub. Supports the function of 'long retraction when cut in filament'.4. Open Source Website: https://github.com/xwzkj/bmcu-wiki5. This product has been assembled. You can use it directly upon receipt.For each set of BMCU 370C, we will carefully inspect it after production and connect it to the printer for testing. So please feel free to purchase.Notes on Connecting to a BMCU:1. Both ends of the 4P cable have anti-reverse design. Ensure the connectors are correctly connected to prevent damage to the motherboard due to reverse insertion.2. Hot plugging is strictly prohibited: Always turn off the power when connecting or disconnecting the printer.3. BMCU currently only work well with firmware version 1.05.00 and older version.4. The firmware versions 06 and 07 cannot be used. Please roll back the firmware to version 05 or earlier. Please pay attention to the updates on firmware compatibility on the open-source website in the future.Warning: Before you turn off the printer, make sure that no filament is loaded into the tool head. Otherwise, when you load or unloadthe filament again when you turn on the printer next time, the error warning 'Falled to check the flament iocation' will appear. If youhave fallen into this situation, don't panic. You can unplug the PTFEtube of the corresponding channel from the connector of theBMCU, then manually press the cutter leveron the tool head to cut the filament, then press the lever on theleft ofthe tool head toreleasethe filament, then pull the filament back from the BMCU,and finally insert the tube back into the BMCU.

Package includes:
1 x BMCU 370C Auto Refill Farm
1 x AMS Connecting Cable
4 x Teflons Tube

(Note: The other items are not includes, for reference only)