This PoE switch selection guide exists because the switch is where camera systems quietly succeed or mysteriously fail: it is the power plant feeding every camera and the traffic hub carrying every stream, bought in five minutes at the end of the order. Choose it by port count alone — the common shortcut — and you inherit the classic night-dropout system. Choose it by the four numbers below, and it disappears into years of silent service. Here is how we size switches for Egyptian homes, shops and factories, with the specific traps our support line untangles weekly.
Key takeaways
- Four numbers decide a PoE switch: ports, total power budget, per-port standard, and uplink speed.
- The total budget is almost always less than ports times per-port maximum — read it, do not assume it.
- Buy at least 25% power headroom over your cameras' night-time draw.
- CCTV switches with extend mode reach 250 meters — the answer for far gates without extra boxes.
- Managed features earn their price at business scale; homes are happier unmanaged.
Number 1: ports — with spares and an uplink
Count cameras, add the growth rule from our channel-sizing guide, and remember the switch needs its own way out: an uplink port to the recorder or router that is not one of the PoE camera ports. The clean patterns: an 8-port PoE switch with two dedicated uplinks carries six to eight cameras comfortably; a 16-port carries a serious shop. Two smaller switches — one per floor — often beat one big central switch, because each floor's cameras then ride a short cable run and one uplink travels between floors.
Number 2: the power budget — the night-dropout number
Every PoE switch declares a total power budget, and it is almost always less than the ports multiplied by their per-port maximum — an eight-port unit rated 30 watts per port may carry a 120-watt total. Now the arithmetic that saves you: a fixed camera draws up to about 12 watts with its infrared on, so eight of them demand 96 watts at night — fine on a 120-watt budget, fatal on a 90-watt one. That is the anatomy of the famous fault where cameras run all day and reboot in rotation after sunset. Sum your cameras' maximum ratings from their datasheets, add twenty-five percent, and buy that budget or more.
Number 3: standards per port
Fixed cameras live happily on 802.3af ports; PTZ cameras, heavy illuminators and heated housings want 802.3at — PoE+ — and the giants ask for bt. The trap is a single hungry device on a modest switch: one PTZ among eight fixed cameras means at least one at-class port must exist, or the PTZ boots, moves, and restarts forever. Check the datasheet twice when any camera moves, zooms or carries its own spotlight; our PoE explainer decodes the classes in detail.
Number 4: switching capacity and the uplink
Video is a steady river: eight 4MP cameras produce roughly 32 Mbps around the clock, and every stream must cross the uplink to the recorder. A gigabit uplink swallows that with contempt; a fast-ethernet uplink at 100 Mbps starts choking as cameras and resolutions grow. The rule costs nothing at purchase time: gigabit uplink always, gigabit camera ports preferably, and if the switch will also carry office traffic, revisit our network design guide — cameras deserve their own lane.
Extend mode: the 250-meter trick
Surveillance-grade PoE switches carry a gift the office models lack: an extend mode that pushes power and video to roughly 250 meters per run, at a reduced 10 Mbps that a single camera never notices. For the far gate, the warehouse corner and the parking entrance, that mode replaces mid-path boxes and their future points of failure. Flip it per port — usually a physical switch or a setting — and label which ports run extended, or the next technician will chase a speed mystery.
Managed or unmanaged — one honest paragraph
Unmanaged switches are appliances: plug, forget, excellent for homes and single-switch shops. Managed models add the operations powers businesses eventually crave — VLANs to isolate the camera network, per-port power cycling to reboot a hung camera from your desk, monitoring that emails you when a port dies, and PoE schedules. Our full comparison draws the line precisely; the short version is scale: past one switch or past one building network, managed earns its premium.
Sizing by system, at a glance
| System | Switch spec | Notes |
|---|---|---|
| 4 cameras, home | 8-port PoE, ~65W budget, gigabit uplink | Or a PoE recorder alone |
| 8 cameras, villa/shop | 8–10 ports, 120W+, gigabit | Count night IR in the math |
| 16 cameras, business | 16-port, 200W+, managed preferred | VLAN the camera network |
| Far gate or yard corner | CCTV switch with extend mode | 250m at 10 Mbps per camera |
| Multi-floor / factory | Switch per zone + gigabit/fiber backbone | Design first — see network guide |
Frequently asked questions
Can I use an office switch with separate power injectors?
It works and it multiplies boxes, sockets and failure points. Per camera it rarely saves money against a proper PoE switch — and standard injectors only; the passive 24-volt kind damages cameras.
Does the switch need a UPS too?
It is the most forgotten member of the UPS family: a protected recorder with a dead switch records nothing. Recorder, switch and router share one UPS — that trio is the whole chain.
My recorder has PoE ports — do I need a switch at all?
Up to its port count and power budget, no. Switches enter when cameras outnumber the ports, sit far away, or deserve a separated network — the same four numbers decide, wherever the ports live.
Where should the switch physically live?
Ventilated, dust-guarded and off the floor — a closed hot cupboard in an Egyptian summer cooks switches into random reboots. If it must sit in a cabinet, give the cabinet vents.
Related guides
- What is Power over Ethernet (PoE) and why it matters
- Managed vs unmanaged PoE switches
- Network design for surveillance cameras
- 4 vs 8 vs 16 channels: how to size your recorder
Get the four numbers calculated for you
Send FastEgy your camera list and distances and we will return the switch spec — ports, budget, standards, uplink — with today's prices on stocked models. Start at the contact page or browse PoE switches in the FastEgy store.