Structure of module and flexible set-up of capacity for easy expansion of capacity and realization of direct connection and disc storage.

模块化结构，容量配置灵活，便于扩容，并可实现光缆的直通、盘储功能。

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This system features in compact module, simple circuit, powerful functions and flexible expansion.

整个系统结构紧凑，电路简单，功能强大，可扩展性强。

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