A-100 modules have to be connected only to original A-100 bus boards supplied by original A-100 power supplies. We recommend the usage of ready made A-100 Cases with built-in bus boards and power supply. Especially no bus boards from third party manufacturers with polarized pin headers (so-called box headers) are allowed !
They may force the user to plug in the A-100 bus cable in the wrong way ! In this case the module will be destroyed and the warranty is void ! For all A-100 module and A-100 bus boards this rule is valid: colored wire of the bus cable = bottom (-12V indication).