BTT EXP-MOT V1.0 is a driver expansion module, which can be used on the motherboard with the EXP interface, so as to expand three available drivers.
Application scope of the module：
Any motherboard with EXP1 + EXP2 reserved can be plugged in and used, such as BIGTREETECH SKR V1.3、BIGTREETECH SKR V1.4、BIGTREETECH SKR V1.4 Turbo, and so on.
Based on 3 reviews
the module was ok but it did nt help in my case
I bought the extension board as an extension to my SKR Mini E3 V3, because I wanted to control a second Z-motor. The instructions and the included cables are not made for my board, so it was not plug-n-play. But it works great and meets my expectations.
An inexpensive and easy way to add three motors to the configuration.