Comparing Cisco Catalyst Switch P vs PF Models: Which PoE Solution Fits You?

P models (e.g. C9300L-48P-4G-A) : ship with a 715 W PSU, giving ~505 W PoE+—good for light-to-moderate PoE needs. PF models (e.g. C9300L-48PF-4G-A) : include a 1 100 W PSU, yielding ~890 W PoE+—ideal for full-port PoE+ and future growth. Choose P to save cost when you won’t power all ports simultaneously; pick PF when you need guaranteed full-port PoE+ capacity.

Comparing Cisco Catalyst Switch U vs UB Models

U models (e.g. C9300-48U) ： provide 48 × 1 Gb UPOE ports (up to 60 W each) with Cisco’s standard packet-buffer size—ideal for typical access-layer PoE deployments where traffic bursts are moderate. UB models (e.g. C9300-48UB): deliver the same UPOE capabilities but include an extra 64 MB of packet buffer—perfect for high-density or burst-sensitive environments (video, IoT, multicast) where smoothing micro-bursts and preventing drops is critical.

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