The term “second generation Personal computer(PC) power supply” means last long use power supply even if there are some changes in PC market alternation of generations.

Generally speaking, PC market changes and develops for one or two years, or even a half year, dramatically and quickly and it happens alternation of generations.
However, if the CPU and other parts are upgraded, Nipron power supply can maintain to be employed and supply continuously unless the basic specifications of CPU and other parts are modified.
The term “second generation power supply” names this types of power supply after as if two-generation(from a parent to a child)usable power supply.