内置DVD刻录机和USB接口方便了视频下载到外部存储。
A built-in DVD writer and USB ports facilitate the downloading of video to external storage.
编码器通过US B接口提供本地录制闪存或外部硬盘驱动，通过网络附加RAID存储系统或中央网络视频录像机录制。
Encoders offer local recording on compact flash or external hard-disk drive via USB, recording on network-attached RAID storage units, or recording with a central network video recorder.
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