Sources: https://apertus-open-source-cinema.github.io/pcbs/index.html#/boards/AXIOM%20Beta%20Imu%20Cso/0.1%20r1.1/default/default
Board: http://files.apertus.org/HARDWARE/AXIOM/BETA/CSO/axiom_beta_imu_cso_v0.1_r1.1.brd
Schematics:
http://files.apertus.org/HARDWARE/AXIOM/BETA/CSO/axiom_beta_imu_cso_v0.1_r1.1.sch
http://files.apertus.org/HARDWARE/AXIOM/BETA/CSO/axiom_beta_imu_cso_v0.1_r1.1-SCH.pdf