The Ubiquiti U-POE-af is a single-port Power over Ethernet (PoE) adapter that converts a standard AC wall outlet into 802.3af-standard PoE output over a Gigabit Ethernet connection. It is designed to power compact Ubiquiti devices, such as small access points, without requiring a dedicated PoE switch. The adapter includes a passthrough data port alongside the PoE output, keeping installation simple for single-device setups.
What is this product?
This adapter functions as an AC-to-PoE power injector, supplying standards-based 802.3af power to a connected device over a single Ethernet cable. It sits between a wall outlet and a network switch or router, injecting power onto the data line so that only one cable needs to reach the powered device.
Key features and practical benefits
The adapter focuses on delivering reliable, standards-compliant power in a small footprint. Its design emphasizes straightforward installation and compatibility with common Ubiquiti access points.
1. Standards-based 802.3af output
Because the adapter follows the 802.3af PoE standard, it is compatible with a wide range of devices that expect standard PoE input, rather than a proprietary voltage.
2. Gigabit passthrough port
A separate Gigabit LAN port allows the adapter to sit inline between a router or switch and the powered device without reducing network speed.
3. Built-in surge protection
Surge and clamping protection help guard connected equipment against voltage spikes, which can be useful in installations with longer cable runs.
4. Compact, simple design
The small housing and single-cable output make it easy to tuck near a router or patch panel without adding much bulk to a setup.
Common use-cases
This adapter is commonly used to power a single small access point in a home or small office, particularly where running a dedicated PoE switch would be unnecessary for just one device. It also suits situations where an existing access point needs to be relocated or where a spare PoE port has failed on a switch.
Important specifications
Manufacturer specifications for this adapter include:
- Output: 48V DC @ 0.32A (approximately 15W), 802.3af-compliant
- Input: 100–240V AC, 50/60Hz
- Ports: 1x Gigabit Ethernet PoE output, 1x Gigabit Ethernet input, 1x AC input
- Dimensions: 86 x 46 x 33 mm
- Weight: 100 g
- Operating temperature: 0–40°C
Practical considerations
This adapter is intended for indoor use and is not weatherproof on its own. Buyers should also confirm that the connected device is designed for passive 802.3af power before connecting it.
1. Indoor rating
The adapter itself needs to be kept indoors or in a protected enclosure if used near an outdoor installation.
2. Device compatibility
Confirm the target device accepts standard 802.3af power, since non-PoE devices can be damaged by a direct connection.
3. Single-device capacity
This adapter powers one device at a time and is not a substitute for a multi-port PoE switch in larger deployments.
Who is this product best suited for?
This product is best suited for:
- Users setting up a single small access point without an existing PoE switch.
- Home or small office networks with modest PoE needs.
- Anyone replacing a failed PoE port on a switch for one device.
- Installers looking for a compact, indoor power solution.
It fits best in simple, single-device scenarios rather than larger multi-device network builds.
Final assessment
The Ubiquiti U-POE-af provides a straightforward, standards-based way to power a single small access point without additional networking hardware. It performs well in that focused role, provided the connected device supports 802.3af and the adapter is kept in a protected indoor location.
Ready to Buy the Ubiquiti U-POE-af PoE Adapter?
If you need a simple, standards-based way to power a single small access point, this adapter is a practical option.