allow external users
允许外部用户
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The two 5W-powered USB ports allow users to connect even two bus-powered external hard drives and also function as a backup battery for two iPads.
ENGADGET: Hyper debuts iUSBport mini, 2 and HD cloud storage and streaming devices (hands-on)
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