Passive PoE Switches

Explore All Passive PoE Switches

4 Port Unmanaged PoE Switch, Gigabit, 1 SFP Uplink, Desktop/Wall Mount for IP Cameras and ONU

Non‑standard 4‑port unmanaged PoE switch with 1 Gigabit SFP uplink. Powers IP cameras, ONUs, access switches in harsh environments. Plug‑and‑play, 12‑48VDC input, metal casing.

SG401NP
Port Description

4 × 10/100/1000Base‑T PoE ports (pins 4/5+ and 7/8‑ for power) and 1 × 1000Base‑SX/LX SFP fiber uplink port.
  • Wide 12‑48VDC input range — works with nearly any DC source
  • Non‑standard PoE on ports 1‑4 (pins 4/5+ and 7/8‑) up to 500mA per port
  • One 1000Base‑SX/LX SFP slot for fiber uplink up to 100km
  • Metal housing with natural heat dissipation, rated -20°C to 60°C
  • Plug‑and‑play installation, no configuration needed
  • Supports jumbo frames up to 15K for efficient data transfer









Tackle Tough Power Challenges with a 4‑Port Unmanaged PoE Switch

When you need to run an IP camera or ONU in an outdoor shed, a warehouse corner, or a remote telecom closet, the last thing you want is to run separate power lines or worry about standard PoE compatibility. This 4 port unmanaged PoE switch is built for exactly those situations. It delivers non‑standard PoE over pins 4/5+ and 7/8‑, so you can power non‑standard devices directly through the Ethernet cable without extra injectors or adapters.

With four 10/100/1000 Base‑T ports and one 1000Base‑SX/LX optical SFP slot, this switch lets you extend your network beyond the usual 100‑meter copper limit. The SFP uplink supports multi‑mode and single‑mode fiber distances from 550m up to 100km, making it a solid choice for connecting distant buildings or surveillance posts. Because it’s an unmanaged switch, there’s zero configuration — just plug in the cables, apply a DC power source between 12V and 48V, and the switch starts forwarding traffic and delivering power.

For network admins and small‑business IT staff, the real value lies in the flexibility. The wide input voltage range means you can run the switch off a battery, a solar panel, or an existing 24V/48V supply in the field. The metal housing acts as a natural heat sink, keeping internal temperatures stable even in environments that swing from -20°C to 60°C. And because each PoE port can source up to 500mA, you’re not limited to low‑power devices — many ONUs and mid‑range IP cameras will work without issue.

Typical use cases include powering ONUs in fiber‑to‑the‑home deployments where standard PoE isn’t available, running security cameras in parking lots or loading docks, and connecting access switches in industrial zones. The compact 114×84×27mm size fits on a desktop or can be wall‑mounted with the included brackets. It’s a practical, no‑frills tool that solves a specific power‑delivery problem without adding complexity.

Protocol Standard IEEE802.3 10Base‑T, IEEE802.3u 100Base‑TX, IEEE802.3ab 1000Base‑T, IEEE802.3z 1000Base‑SX/LX, IEEE 802.3x flow control
Fiber Port 1 SFP slot, 1.25Gbps, multi‑mode 550m‑2km, single‑mode 2‑100km, wavelengths 850/1310/1550/1490nm
Ethernet Port 4 RJ45, 10/100/1000 auto‑negotiate, MDI/MDI‑X auto, half/full duplex
Forward Method Store‑and‑forward (wire‑speed)
MAC Address Table 2K
Buffer Memory 2.5Mb
Jumbo Frames 15K
Packet Forwarding Rate 4.174Mpps @ 64 bytes
Bandwidth 16Gbps (non‑blocking)
LED Indicators PWR, FX (fiber), Link/Act (per port), 1000M
Power Input 12‑48VDC
Power Consumption ≤3W (without PD)
PoE Pinout 4/5+ , 7/8‑
Per Port PoE Current ≤500mA
Operating Temperature -20°C to 60°C
Storage Temperature -40°C to 85°C
Humidity 5%–95% non‑condensing
Cooling Natural heat dissipation
Dimension 114×84×27mm
Weight 0.3kg


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