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PoE Switch Sizing Guide for CCTV: How Many Ports and Watts Do You Need?
The PoE switch is the least glamorous part of a camera system — and the most common thing people get wrong. Undersize it and cameras randomly drop offline; oversize it and you’ve wasted budget. Here’s the simple sizing method our engineers at Speed4Trading use on every project.
What a PoE Switch Actually Does
Power over Ethernet (PoE) sends both data and electrical power through one network cable. One cable per camera — no separate power supplies, no electrician for every camera point. Your cameras plug into the switch; the switch plugs into your NVR.
Step 1: Count Your Ports (with headroom)
Rule: camera count + 1 uplink + 25% spare. For 6 cameras, don’t buy an 8-port that’s already full counting the uplink — either keep 1–2 ports free or go one size up.
Step 2: Do the Power Budget Math
Every switch has a total PoE power budget shared across ports. Typical camera draws:
- Fixed 2–4MP camera: 6–9W
- ColorVu / cameras with active light: 10–13W
- PTZ (motorized) cameras: 20–60W — check the spec sheet
Add your cameras’ watts, then add 30% safety margin. Example: 8 fixed cameras × 8W = 64W × 1.3 = ~83W minimum budget.
Step 3: Fast Ethernet or Gigabit?
Fast Ethernet (100 Mbps/port) is fine for up to 8 cameras at 2–4MP. Gigabit is the safer choice for 4K cameras, longer chains, or any system you plan to grow. The price difference in 2026 is small — when in doubt, go Gigabit.
Hikvision PoE Switch Prices in Egypt (2026)
| Model | Ports | Type | Price (EGP) |
|---|---|---|---|
| DS-3E0106MP-E/M | 4 PoE | Fast Ethernet | 1,138 |
| DS-3E0110MP-E/M | 8 PoE | Fast Ethernet | 1,394 |
| DS-XS06G-P | 4 PoE | Gigabit | 1,589 |
| DS-XS10G-P | 8 PoE | Gigabit | 2,050 |
| DS-3E0318P-E/M | 16 PoE | Long-Range 250m | 5,796 |
| DS-3E0326P-E/M | 24 PoE | Long-Range 250m | 7,907 |
Full range on our network transmission category.
The Long-Range Trick (250m)
Standard Ethernet maxes out at ~100 meters. Hikvision’s E/M “Long-Range” switches push PoE to 250m in extend mode — ideal for gates, fences, and warehouse corners without adding repeaters or fiber.
Quick Sizing Cheat Sheet
| System | Recommended switch |
|---|---|
| 2–3 cameras (apartment/shop) | 4-port: DS-3E0106MP-E/M or DS-XS06G-P |
| 4–6 cameras (home/office) | 8-port: DS-3E0110MP-E/M or DS-XS10G-P |
| 8–14 cameras (villa/store) | 16-port Long-Range: DS-3E0318P-E/M |
| 15–22 cameras (compound/warehouse) | 24-port Long-Range: DS-3E0326P-E/M |
FAQ
Can I plug non-camera devices into a PoE switch?
Yes — PoE ports auto-negotiate. Laptops and printers just get data; PoE devices (access points, IP phones, door stations) get power too.
What happens if I exceed the power budget?
The switch starts dropping power to some ports — cameras reboot randomly or go offline, usually the ones farthest away. If that’s happening to you, your budget is undersized.
Do I need a managed switch for CCTV?
For most CCTV systems an unmanaged PoE switch is enough. Managed switches matter for large multi-switch networks with VLANs — typical in compounds and factories.
Building a Full System?
Request a quote with your camera count and site layout — we’ll size the switch, NVR, and storage correctly the first time. Or start with a complete bundle with everything matched and installed.
