打开电源前,请确保USB设备已经连接至接收机(使用USB硬盘需外接电源)。Open the power supply before, make sure that the USB devices are connected to the receiver (using the USB hard drive external power supply requiredBefore power on, please ensure USB had been connected with receiver(Use hard disk with outer power supply). 在电源上,请确保已连接的USB接口与接收器(使用的硬盘与外部电源供应器)