How much PoE budget do I need on a 24-port switch?
Total the draw of everything you will power, then add around a third for growth. Twelve access points and eight cameras typically lands between 200W and 300W.
Ubiquiti UniFi
Overview
A 24-port PoE switch is the standard floor switch for a UniFi office — it powers the access points, cameras and door readers and feeds them back to the gateway. The number that decides which model you need is the total PoE budget, not the port count.
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Add up what every powered device draws, allow headroom, then pick the model that covers it. A floor with twelve access points and eight cameras can need far more watts than the entry-level 24-port model provides.
As a rough guide, a Wi-Fi 6 access point draws up to about 15–20W and a dome camera 7–12W. Total the real figures, add a third for growth, and compare against the switch budget.
| Deployment | Device | Typical draw | Power standard |
|---|---|---|---|
| U6 Lite access point | ~10W | PoE (802.3af) | |
| U6 Pro access point | ~13W | PoE+ (802.3at) | |
| U7 Pro access point | ~18W | PoE+ (802.3at) | |
| Dome camera | ~8W | PoE (802.3af) |
If the floor aggregates back to a core switch or a multi-gig gateway, the uplink matters as much as the ports. We specify SFP+ where the traffic justifies it and leave headroom for the next expansion.
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FAQs
Total the draw of everything you will power, then add around a third for growth. Twelve access points and eight cameras typically lands between 200W and 300W.
Only for higher-power devices such as PTZ cameras or some Wi-Fi 7 units. Most estates need a mix of PoE and PoE+ rather than PoE++ everywhere.
It will power and switch any compliant device. Third-party hardware simply is not visible in the UniFi console the way Ubiquiti kit is.
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Ubiquiti UniFi 24 port PoE switches supplied in the UK with PoE budget planning, SFP uplinks and VLAN configuration. Specifications, FAQs and same-week quotes.