Etp48400-c9a3 Huawei embedded communication DC high frequency switching power supply product overview etp48400-c9a3 is Huawei embedded communication DC high frequency switching power supply system, which supplies power to – 48V DC series communication equipment, and the maximum output current is 400A. Model description of etp48400-c9a3 Huawei embedded communication DC high frequency switching power supply model description of etp48400-c9a3 is shown in the figure below. Figure 2-1 model description