The Ubiquiti F-POE-G2 is a Gigabit PoE power injector purpose-built to power fiber ONU (Optical Network Unit) devices, such as Ubiquiti’s UFiber line, over a standard Ethernet connection. It takes power from a wall outlet and injects it onto the Ethernet cable running to the ONU, eliminating the need for a separate power brick at the device itself. The adapter includes a Gigabit data passthrough port alongside its power output.
What is this product?
This is a passive Gigabit PoE injector designed specifically to power compatible fiber ONU hardware. It sits between a router or switch and the ONU, delivering power over the same cable that carries the data connection, similar in concept to other Ubiquiti passive PoE adapters but tuned for fiber-side equipment.
Key features and practical benefits
The F-POE-G2 is built around simplifying power delivery for fiber termination equipment that would otherwise require its own dedicated outlet.
1. Purpose-built for GPON ONUs
The adapter is designed to match the voltage and power requirements of Ubiquiti’s UFiber and similar ONU devices, simplifying compatibility questions compared to a generic PoE injector.
2. Gigabit data passthrough
A dedicated Gigabit Ethernet port allows full-speed data to pass through the injector without bottlenecking the connection to the ONU.
3. Simplified cable runs
By carrying power over the Ethernet cable, the injector removes the need to route a separate power cable to the ONU’s install location, which is often in a closet, basement, or wall-mounted enclosure.
Common use-cases
This adapter is commonly used when installing or replacing a fiber ONU that requires PoE power, particularly in homes or offices where the ONU is mounted away from a convenient outlet. It also suits network installers standardizing on Ubiquiti’s UFiber ecosystem who want a matched, purpose-built power source rather than a generic adapter.
Important specifications
Manufacturer specifications for this adapter include:
- Data rate: Gigabit Ethernet passthrough
- Powering scheme: Passive PoE, matched for UFiber ONU devices
- Input: 100–240V AC, 50/60Hz
- Ports: Gigabit Ethernet passthrough, PoE output, AC input
- Operating temperature: 0–40°C
Practical considerations
This is passive PoE tuned for specific ONU hardware, so it should be matched against the connected device’s documented power requirements before use.
1. Device-specific power matching
Since this is passive PoE, it should only be used with ONU devices that expect this specific voltage and pinout, rather than general-purpose networking gear.
2. Always-on output
As with other passive PoE adapters, power is present on the output whether or not a compatible device is connected, so care should be taken with what gets plugged in.
3. Not a general PoE switch replacement
This adapter is intended for a single ONU connection rather than powering multiple devices, unlike a full PoE switch.
Who is this product best suited for?
This product is best suited for:
- Owners of Ubiquiti UFiber or similar GPON ONU equipment.
- Installers needing to power an ONU mounted away from a wall outlet.
- Anyone replacing a lost or damaged original ONU power adapter.
- Users standardizing on Ubiquiti’s fiber ecosystem for consistent hardware.
It is a focused, purpose-built solution for a specific fiber-networking power need.
Final assessment
This adapter offers a clean, dependable way to power a compatible fiber ONU without running a separate power cable. It performs well for its intended purpose, provided buyers confirm compatibility with their specific ONU model before purchasing.
Ready to Buy the Ubiquiti F-POE-G2?
If you need a dedicated power source for a compatible fiber ONU, this adapter is a practical option.