Ubiquiti USW-FLEX | UniFi Switch Flex | 5 Gbps Switch
A five-port managed PoE switch for locations where running a separate power cable isn't practical — it takes PoE in and distributes PoE+ to four downstream ports.
Why this one
- It draws power from a PoE++ uplink rather than a mains socket, so you can place a switch at a ceiling mount, pole, or cabinet where there's no power outlet nearby.
- With a PoE++ or 60W adapter input, all four downstream ports share up to 46W total — enough to run four access points or cameras without a separate injector at each one.
- The operating temperature range of -40 to 55 °C at full PoE output makes it genuinely outdoor-rated, not just weather-tolerant, which matters for exposed enclosures and external cable runs.
- Supports up to 1,000 VLANs and manages through UniFi Network alongside the rest of your stack, so you're not adding a separate management interface for a small remote switch.
Good fit if you need to extend a few PoE ports to a location that already has a PoE++ capable uplink — a ceiling AP cluster, an outdoor camera cluster, or a small remote cabinet — and running a new power circuit isn't on the table.
Worth considering something else if you need more than four downstream ports or higher aggregate PoE budget, in which case the USW-LITE-8-POE gives you eight PoE ports and a larger power pool from a mains connection.
What you'll also need
A PoE++ capable uplink switch or a 60W PoE adapter (sold separately) to power the USW-Flex itself; without a PoE++ source, PoE output to downstream devices is reduced to 8W total, which won't run most access points or cameras.
Technical specifications
Overview
| Dimensions | 122.5 x 107.1 x 28 mm (4.8 x 4.2 x 1.1") |
| 1 GbE RJ45 | 5 (4 PoE+; 1 PoE++) (1G/100M/10M) |
| Max. PoE Output | Up to PoE+ |
| Total PoE Availability | PoE++/60W PoE adapter input: 46W PoE+ input: 20W PoE input: 8W |
| Form Factor | Compact desktop, wall, pole |
Performance
| Switching Capacity | 10 Gbps |
| Total Non-Blocking Throughput | 5 Gbps |
| Forwarding Rate | 7 Mpps |
| Supported VLANs | 1,000 |
| MAC Address Table Size | 2,000 |
Hardware
| PoE+ | 4 |
| PoE++ | 1 |
| PoE+ | 25W |
| Max. Power Consumption | 5W (Excluding PoE Output) 51W (Including PoE Output) |
| Power Method | PoE++ |
| Power Input Method | PoE |
| Supported Voltage Range | 50–57V PoE |
| Management | Ethernet |
| Heat Dissipation | 17.1 BTU/hr (Excluding PoE Output) |
| Weight | 230 g (8.1 oz) |
| ESD Protection | Air/contact: ± 16kV |
| Ambient Operating Temperature | 46W PoE output: -40 to 55° C (-40 to 131° F) 25W PoE output: -40 to 65° C (-40 to 149° F) |
| Ambient Operating Humidity | 5 to 95% noncondensing |
| Certifications | CE, FCC, IC, Anatel: 14502-20-08356 |
Software
| UniFi Network | Version 5.10.3 and later |