求翻译：3. 电源反接保护和反接LED显示功能：针对客户在安装时曾经出现过接反电源线导致烧坏主板的情况，加上了保护和显示电路，电源一接反就可以看到，再也不会出现因此烧坏主板的情况了。是什么意思？

3. power reverse protection and reverse LED display features: for customers at the time of installation ever appear connected reversely lead to burn out the power cable to the motherboard, with protection and display circuit, power supply connected backwards as you can see, has never appeared so burned out Board.