搜索 - 科创

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但大部分的传统硬盘磁头启停不需要磁头架，也就是说脆弱的磁头要想正常工作，必须要在盘片内圈涂有特定润滑层的轨道上，如同飞机起降一般。

在主机运行过程中若遇市电掉电或关机时，PW-OK输出信号比ATX开关电源＋5V输出电压提前几百毫秒消失，通知主机触发系统在电源断电前自动关闭，防止突然掉电时硬盘磁头来不及移至着陆区而划伤硬盘。

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