This Module is currently available.
Step sequencer
the bottom part is cut off in the picture because it exceeds the 3U limitiation.
This "module" can be used as a placeholder where the beatstep pro is inside the bottom row of a rack
The remaining size is cut off in the picture
When using an adapter cable power BUS -> Micro USB for powering the power consumption is about 300mA 5V DC
https://www.arturia.com/products/hybrid-synths/beatstep-pro/overview
These merchants probably sell this module. Huh?