US B拇指驱动器，安全数码卡(SD)记忆和其他快闪记忆体正在迅速增加人气和能力。
USB thumb drives, Secure Digital Card (SD) memories and other flash memories are rapidly increasing in popularity and capacity.
您可以保存用户程序，设置和歌曲到USB拇指驱动器或直接到计算机。
You can save your user programs, setups and songs to a USB thumb-drive or directly to a computer.
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