Checking the Power Supply System

The power supply system must be ready before the installation. Table 1 describes the requirements for the power supply system of the S2700, S3700, S5700, and S6700 series switches.

**Table 1** Power supply requirements
Item	Requirement
Input voltage	The input voltage must be within switch specifications. For details, see the Hardware Description.
Power outlets and power cables	To use AC power outlets, switches must have built-in AC power supply units or pluggable AC power modules, and use AC power cables complying with local standards. To use an AC power distribution unit (PDU), switches must have built-in AC power supply units or pluggable AC power modules, and use C13 straight female to C14 straight male power cables. To use a DC power distribution box, switches must have built-in DC power supply units or pluggable DC power modules, and use DC power cables. The power cables and plugs delivered with a switch are for use with this switch only. Do not use them on other devices.
Circuit breaker of each channel	The rated current of a circuit breaker must be greater than the maximum input current of power modules.