This mp3 player supports normal SD memory card and moblile U disk except some which is unsteadiness and too slow-speed ones .
播放器支持绝大多数的SD卡和U盘，极少数SD卡U盘本身不稳定或速度太慢的不支持。
U disk has become a very common mobile storage devices, more easy to carry than flash memory and provided a variety of capacity to choose.
盘已经成为很常用的移动存储设备，比闪存易于采购和携带，有多种容量可选。
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