跳線帽是華碩寫的，應該是指別廠的吧，我沒有Hitachi HDD，我想應該是用ftool來修改的才是。
he Feature Tool allows you to:

* Enable or disable the read-ahead or write cache.
* Change the drive Automatic Acoustic Management settings to the:
o Lowest acoustic emanation setting (Quiet Seek Mode), or
o Maximum performance level (Normal Seek Mode).
* Change the predefined capacity of the drive. This option can be used in situations where there is a BIOS limitation and the drive is not recognized. See the PDF Users Guide for specific details.
* Switch the Ultra DMA mode
* Change Advanced Power Mode - allows you to change between the lowest power consumption and the highest power consumption (maximum performance level).
* Show Drive Temperature - shows the current drive temperature in Celsius and Fahrenheit.
* Configure SATA interface - adjust maximum speed and enable/disable Spread Spectrum Clocking.
Warning!: Switching your drive to support 3.0Gb/s, or enabling spread specturm clocking and then using it, may render your drive unusable in a system that can't support these functions. If in doubt, please contact your system manufacturer.