Keep a standard-airflow Cisco 10 Gigabit switching configuration associated with the appropriate hardware-support service. This item corresponds to a configuration specified with two AC power supplies and one fan, so it should be selected for that equipment arrangement rather than treated as a separately shipped power or cooling component. CON-C1DSD-N93LANK9 identifies the service-ordering item for this configuration. Airflow direction, power-supply count, and fan count matter in compact data-center switching deployments because they define the hardware arrangement being covered. Match this service item to the installed standard-airflow configuration before associating it with a support entitlement. It is not a replacement fan, power supply, or switch; it is an associated service item for the described assembly. It does not add Ethernet interfaces, expand switching capacity, or change the electrical characteristics of the covered hardware. Use it where a 10 Gigabit Ethernet deployment has the stated two-AC-supply, one-fan configuration and needs Cisco support coverage tied to that arrangement. The configuration language distinguishes it from service items for alternate airflow or power layouts. Keep the physical switch configuration unchanged when validating eligibility, since the description specifically calls out the standard-airflow pack and its installed power and cooling components. Its purpose is to associate service with the matching configuration, not to alter the appliance.