With the ATX standard also came the ATX power supply ... the -12V rail made optional. The ATX power connector with the mainboard was increased from 20 to 24 pins to allow for more 12 V capacity ...

12 + 48V + DC/DC dual voltage redundant power supply solution Zhuhai CosMX Battery's dual-voltage integrated products basically expand the system architecture on the 12V system, retaining the original ...