Use the method
Practical guides for PortPlan PoE Budget
A switch can have enough physical sockets but still lack the PoE watts needed by its connected devices. PortPlan keeps those constraints visible, while leaving exact class and draw claims to the documentation you enter.
Practical guide
Count usable switch ports after uplinks
Keep physical switch ports and reserved uplinks separate when planning a PoE device list.
Read guidePractical guideBudget PoE watts with a visible headroom choice
Sum per-port demand, apply the entered reserve, and compare the recommendation with the switch budget.
Read guideRead the calculation methodology and reference sources
Method and examples reviewed 2026-09-30. Examples are illustrative; input values and specifications are not independently verified.