Power Supply Configuration of S6720S-26Q-EI-24S-AC
An Huawei S6720S-EI switch can have one or two power modules installed.
When a switch has two power modules installed, the two power modules work in 1+1 redundancy mode. AC and DC power modules can be used together in the same switch.
Figure 1 shows the power supply connections of dual DC power modules. After DC power is transmitted to the PWR module, the PWR module provides 12 V output voltage, and the motherboard provides power for the entire device.
Power supply connections of dual DC power modules
Figure 2 shows the power supply connections of dual non-PoE AC power modules. After AC power is transmitted to the PWR module, the PWR module provides 12 V output voltage, and the motherboard provides power for the entire device.
Power supply connections of dual non-PoE 170 W AC power module.
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