The Ubiquiti USW-Flex-2.5G-5 UniFi Flex Mini 2.5G is a compact 5-port Layer 2 switch designed for multi-gigabit network connectivity. All five RJ45 ports support 2.5 GbE as well as 1 GbE, 100 MbE, and 10 MbE connections.
Multi-Gigabit Connectivity
Each of the five RJ45 ports supports up to 2.5 GbE. The switch provides a 25 Gbps switching capacity and 12.5 Gbps total non-blocking throughput, making it suitable for connecting high-bandwidth access points, workstations, NAS devices, and other network equipment.
Power Options
The USW-Flex-2.5G-5 can be powered through USB Type-C at 5V DC or through PoE. Maximum power consumption is specified as 5W with USB-C power and 6.4W when powered through PoE.
Layer 2 Features
- STP and RSTP
- VLAN support for up to 256 VLANs
- Port isolation and port mirroring
- Flow control and storm control
- Jumbo frames and loop protection
- Egress rate limiting
Fanless Compact Design
The compact desktop enclosure uses polycarbonate construction and operates without a fan. Its operating temperature range is -20°C to 45°C, with 10–90% noncondensing operating humidity.
DC Supplies Product Note
The USW-Flex-2.5G-5 is intended for compact multi-gigabit network deployments where five 2.5 GbE ports are sufficient. Power can be supplied through USB-C or PoE; verify the selected power method and available PoE source before deployment.
Specifications
| Brand | Ubiquiti |
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| Part Number / MPN | USW-Flex-2.5G-5 |
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| Product Type | 5-Port 2.5 GbE Layer 2 Switch |
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| Port Layout | 5 × 2.5 GbE RJ45 |
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| Supported Port Speeds | 2.5G / 1G / 100M / 10M |
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| Switching Capacity | 25 Gbps |
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| Total Non-Blocking Throughput | 12.5 Gbps |
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| Forwarding Rate | 19 Mpps |
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| Supported VLANs | 256 |
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| MAC Address Table | 4,000 entries |
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| Power Method | USB Type-C or PoE |
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| USB-C Input | 5V DC, 1A |
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| PoE Supported Voltage | 44–57V |
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| Maximum Power Consumption | 5W USB-C / 6.4W PoE |
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| Enclosure Material | Polycarbonate |
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| Operating Temperature | -20°C to 45°C |
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| Operating Humidity | 10–90% noncondensing |
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| Management | Ethernet via UniFi Network |
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| Application Requirement | UniFi Network 8.6.9 or later |
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| NDAA Compliant | Yes |
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Frequently Asked Questions
How many ports does the USW-Flex-2.5G-5 have?
It has five 2.5 GbE RJ45 ports, with each port supporting 2.5G, 1G, 100M, and 10M Ethernet speeds.
How can the USW-Flex-2.5G-5 be powered?
The switch supports USB Type-C power at 5V DC, 1A or PoE with a supported 44–57V input range.
Does the USW-Flex-2.5G-5 support VLANs?
Yes. Ubiquiti specifies support for up to 256 VLANs along with other Layer 2 features.
What is the switching capacity?
The switch has a 25 Gbps switching capacity and 12.5 Gbps total non-blocking throughput.
Is the switch fanless?
Yes. The USW-Flex-2.5G-5 uses a compact fanless design.
