Cisco Systems, Inc. C9300L-24P-4G-A network switch 24 PoE+ ports 4 1G uplinks 505 W

Cisco Catalyst 9300L 24-port PoE+ switch

This managed rack-mountable switch delivers 24 Gigabit Ethernet ports with PoE+ support and four 1G SFP uplinks. It suits small to mid-sized businesses that need reliable wired connectivity and power for access points, cameras or phones. The 505 W PoE budget covers multiple powered devices from a single unit. Network Advantage licensing enables Layer 3 routing and advanced security features out of the box.

Sustained load behaviour

The 505 W PoE budget is shared across all 24 ports and remains available during continuous operation. Three field-replaceable fans maintain airflow under full PoE draw without requiring a chassis shutdown for maintenance. Managed firmware provides QoS and storm control to keep traffic stable when every port is active. The fixed uplinks handle aggregate uplink traffic at line rate for extended periods.

Practical limits of the 1G uplink interface

Four 1G SFP uplinks cap total upstream throughput at 4 Gbps, which can become a bottleneck when many PoE devices transmit simultaneously. The 10GBase-X primary port speed specification applies to the switching fabric, not the fixed uplinks. Networks that exceed 4 Gbps of egress traffic will need aggregation or a model with higher-speed uplinks. Fibre distance and module choice also affect real-world reach.