聲音是正常的.....因為你的HD是E7K100 E是代表企業級刀封伺服器用喔
ttp://www.hitachigst.com/tech/techlib.nsf/techdocs/936114287A61AF1086256FEF00544C6A/$file/T7K100_sp1.3.pdf
http://www.hitachigst.com/tech/techlib.nsf/techdocs/266E7787A29B2F8A86256FF1006C3A66/$file/ET7K100_spv1.0.pdf