NDSI水晶保護盒結構及功能說明：(NDSIcrystalboxprotection)1、增加耳機插孔防塵塞；（theincreaseindust-proofheadphonejackplug.)2、增加USB插孔防塵塞；(increasethe USBplugsocketdust.)3、底殼背面增加孔位，手指往上推輕松取下主機；(Dikeholeonthebackofanincrease,pushingupfingerstoeasilyremovethehost.)4、可旋轉180度；(canrotate180degrees.)5、查隨楊旋轉任意角度。(withthehostrotatingshaftatanyangle.)