Does the S7700&S9700 support the AC power supply and DC power supply

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AC and DC power modules or power modules of different power values cannot be installed simultaneously in the same type of power slots (system or PoE). In versions earlier than V200R006C00, the PoE slots of a switch allow only AC power modules. To use the PoE function on a switch, use AC power modules as the system power modules. In V200R006C00 and later versions, the PoE slots allow both AC and DC power modules.

Other related questions:
Does the S12700 support the AC power supply and DC power supply
AC and DC power modules cannot be installed simultaneously in the same type of power slots.

AC and DC power supply on S series switches
You can check whether an S series switch supports AC or DC power supply based on the following guidelines: 1. Check the switch model. If the model contains AC, the switch supports AC power supply. If the model contains DC, the switch supports DC power supply. 2. Check the power module. Differentiate AC and DC switches based on the power module. Power modules are divided into non-PoE and PoE power modules. You can also use the Hardware Query Tool at Hardware Query Tool.

Can the AC and DC power supply be used at the same time on the U1900?
No. The U1900 can use only one type of power supply.

What are Recommendations for the AC Power Supply
Recommendations on the AC power supply are as follows: Use a voltage stabilizer or voltage-regulator to respond to unstable voltages. Use a voltage-regulator in the following situations: The server is directly powered by the mains supply, and the power supply voltage exceeds the rated voltage by -10% to +5% or the voltage range allowed for the server. The server is not directly powered by the mains supply, and the mains voltage exceeds the rated voltage by -15% to +10% or the AC input voltage range allowed for the DC power equipment. To ensure the continuity of power supplies, use the UPS or inverter. Install an electric generator set for an office to ensure the normal communication and power load in case of mains failure. The capacity of the electric generator set should be greater than or equal to 1.5 to 2 times the capacity of the server with uninterrupted power. Connect two storage battery strings in parallel. If UPSs are used as storage batteries, only one UPS battery string is required in general. The UPSs need to work in backup mode and can be connected in parallel or serial. If an inverter is used, take the inverter that can provide more power as the primary one, and take the other as the secondary one.

Does IAD208 support POE power supply
IAD208 does not support POE power supply

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