pm981a是什么协议
pm981a是PCIe协议。三星PM981A固态硬盘是M.2接口的固态硬盘，如果主板上没有m.2接口，三星PM981a是PCIe协议的，主板正常情况下应该能用，硬盘型号三星MZVLB512HBJQ也就是俗称的PM981A，市面上顶级的Nvme之一，型号是三星PM981A惠普，该硬盘容量为512Gb，支持nvme协议，是三星的pm981a，高端nvme之一。
pm981a的优点
pm981a内部由电子存储芯片(闪存颗粒)控制单元、存储单元组成，读写数据的过程中不存在任何机械运动。固态硬盘接口规范、功能及使用方法与机械硬盘相同，其外形和尺寸也和普通硬盘相仿，但内部结构却与机械硬盘完全不同。由于pm981a的内部不存在机械运动，所以抗震性非常好。
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