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How to Choose a PoE Switch for IP Cameras and Access Points
How to Choose a PoE Switch for IP Cameras and Access Points
How to work out ports, PoE budget and standard when choosing a PoE switch for cameras and Wi-Fi access points.
When installing IP cameras or ceiling access points, you do not need a power outlet next to every device. A PoE switch sends both data and power over a single Ethernet cable. To pick the right one, check three things: the standard, the PoE budget and the number of ports.
PoE vs PoE+ vs PoE++
| Standard | Power per port | Used for |
|---|---|---|
| PoE (802.3af) | up to 15.4 W | Basic IP cameras, IP phones |
| PoE+ (802.3at) | up to 30 W | Wi-Fi 6/7 access points, IR and pan/tilt cameras |
| PoE++ (802.3bt) | 60 W and more | High-power PTZ cameras and other demanding devices |
A PoE+ port also powers standard PoE devices, so PoE+ is a safe choice with headroom.
How to calculate the PoE budget
The PoE budget is the maximum total power the switch can deliver across all PoE ports. Eight PoE ports do not guarantee that eight devices can run at full power.
A simple rule: add up the maximum consumption of your devices and add 20–30% headroom. Each device’s maximum consumption is listed in its specifications. For example, 8 cameras at 7 W max = 56 W, about 70 W with headroom — a 63–65 W switch is at the limit, so a model with a larger budget is the better choice.
How many ports do you need?
- 2–4 cameras — a 5-port switch (4 PoE + 1 uplink).
- 5–8 devices — an 8 or 10-port switch.
- 10–24 devices — a 24 PoE-port switch.
Remember that one port is needed for the uplink to the router or NVR. Keep 1–2 spare ports for future growth.
Unmanaged, Smart or managed?
- Unmanaged — plug and play. Ideal for small camera systems.
- Smart / Omada — VLANs, remote PoE power cycling (rebooting a camera), central management via an Omada controller.
- L2+ managed — large networks, office buildings, complex segmentation.
TP-Link PoE switches
| Model | Ports / PoE ports | PoE budget | Type |
|---|---|---|---|
| TL-SG1005P | 5 / 4 PoE+ | 65 W | Unmanaged |
| TL-SG1008P | 8 / 4 PoE+ | 64 W | Unmanaged |
| TL-SG1210P | 10 / 8 PoE+ | 63 W | Unmanaged, SFP |
| TL-SG1210PP | 10 / 6 PoE+ + 2 PoE++ | 123 W | PoE++ for high-power devices |
| TL-SG2210P | 10 / 8 PoE+ | 61 W | Smart, Omada |
| TL-SG2428P | 28 / 24 PoE+ | 250 W | Smart, Omada |
| TL-SG3428MP | 28 / 24 PoE+ | 384 W | L2+ managed, Omada |
Some unmanaged models have an Extend mode that carries data and power up to 250 m (at reduced speed) — useful for yard or parking cameras.
FAQ
Can a PoE switch damage a camera?
No. A standard PoE switch detects the device first and only supplies power if it supports PoE.
How long can the cable be?
Up to 100 m, like regular Ethernet. Models with Extend mode reach up to 250 m at reduced speed.
Let us calculate the PoE budget for your cameras and access points: WhatsApp +994 77 444 23 23. tplink.com.az is the official TP-Link partner in Azerbaijan.
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