The Ubiquiti Networks PoE Adapter is a passive 24V power injector used to supply power to compatible network devices over a spare pair of an Ethernet cable. It is commonly used with airMAX, UniFi, and similar Ubiquiti equipment that expects passive 24V power rather than standards-based 802.3af/at PoE. The adapter includes a Gigabit passthrough data port alongside its power output.
What is this product?
This is a passive PoE power injector that feeds 24V DC power onto an Ethernet cable’s spare pairs while passing data through separately. It sits between a router or switch and a compatible Ubiquiti device, providing power over the same cable run as the network connection.
Key features and practical benefits
The adapter is built around simple, reliable power delivery for devices designed around Ubiquiti’s passive PoE standard.
1. Passive 24V power delivery
The adapter supplies a constant 24V DC output, matching the power requirements of many Ubiquiti airMAX and UniFi devices.
2. Gigabit data passthrough
A separate Gigabit Ethernet port allows full-speed data to pass through the adapter alongside the power injection.
3. Built-in surge protection
Surge and clamping protection help guard connected equipment from voltage spikes on the power or data lines.
Common use-cases
This adapter is commonly used to power a single Ubiquiti airMAX radio, UniFi access point, or similar device that requires passive 24V PoE, particularly when a dedicated PoE switch is not already in place. It is also used to replace a lost or damaged adapter that originally shipped with such a device.
Important specifications
Manufacturer specifications for this adapter include:
- Output: 24V DC (wattage varies by model tier)
- Input: 100–240V AC, 50/60Hz
- Powering scheme: 2-pair passive PoE (pins 4/5, 7/8)
- Ports: Gigabit Ethernet passthrough, PoE output, AC input
- Operating temperature: 0–40°C
Practical considerations
This is passive PoE, meaning 24V is always present on the output whether or not a device is connected. It is not interchangeable with standards-based 802.3af/at PoE equipment.
1. Not standards-based PoE
Because this is passive 24V power rather than 802.3af/at, it should not be connected to devices that expect standard PoE negotiation.
2. Wattage must match the device
Selecting an adapter with sufficient wattage for the connected device helps avoid under-powering issues.
3. Always-on output
Since power is always present on the output port, connecting an incompatible device directly can cause damage.
Who is this product best suited for?
This product is best suited for:
- Owners of Ubiquiti airMAX or UniFi devices needing passive 24V power.
- Anyone replacing a lost or damaged original power adapter.
- Single-device installs without an existing PoE switch.
- Users who understand and can accommodate passive PoE wiring.
It is a practical, focused solution for powering a single compatible Ubiquiti device.
Final assessment
This adapter offers dependable passive PoE power for compatible Ubiquiti devices in a simple, single-port design. It performs well for its intended purpose, as long as buyers confirm their device supports passive 24V power before connecting it.
Ready to Buy the Ubiquiti PoE Adapter?
If you need a reliable 24V passive power source for a compatible Ubiquiti device, this adapter is a practical option.