Ubiquiti UniFi Flex 2.5G | 8-Port
UniFi Flex 2.5 (8-Port) – Compact 2.5G Switch with 10G Combo Uplink
The UniFi Flex 2.5 (8-Port) is a versatile, high-speed Layer 2 switch designed for flexible, space-efficient deployments. It features eight 2.5 GbE ports and a 10 GbE RJ45/SFP+ combo uplink, delivering powerful multi-gigabit connectivity for modern UniFi networks.
Powered via USB-C or PoE+, the Flex 2.5 offers convenient power options and simple setup in any environment. Compact and durable, it’s ideal for desktop, small office, or edge network installations that require high throughput and reliable UniFi integration.
Tech Specs
| Device Specifications | |
|---|---|
| Overview | |
| Dimensions | 212.9 x 76 x 33.5 mm (8.4 x 3 x 1.3") |
| Port Layout | 2.5 GbE RJ45: 8 (2.5G/1G/100M/10M) 10 GbE RJ45: 1 (10G/5G/2.5G/1G/100M) 10G SFP+: 1 (10G/1G) |
| Form Factor | Compact Desktop, wall, DIN, magnetic |
| Performance | |
| Switching Capacity | 60 Gbps |
| Total Non-Blocking Throughput | 30 Gbps |
| Forwarding Rate | 45 Mpps |
| Supported VLANs | 256 |
| MAC Address Table Size | 4,000 |
| Layer 2 Features | |
| STP & RSTP | ✓ |
| Egress Rate Limit | ✓ |
| Flow Control | ✓ |
| Storm Control | ✓ |
| Multicast & Broadcast Rate Limiting | ✓ |
| Port Isolation | ✓ |
| Port Mirroring | ✓ |
| Jumbo Frames | ✓ |
| Loop Protection | ✓ |
| Hardware | |
| Max. Power Consumption | 14W with PoE input 14W with AC adapter input |
| Power Method | (1) USB Type-C, 5V DC, 3A (1) PoE+ |
| Power Supply | AC/DC, external, 15W |
| Supported Voltage Range | 4.8—5.2V DC/USB 44V—57V PoE |
| Management | |
| Ethernet | – |
| Physical | |
| Weight | 395 g (0.87 lb) |
| Enclosure Material | Polycarbonate |
| Mount Material | Polycarbonate |
| Ambient Operating Temperature | -20 to 45°C (-4 to 113°F) |
| Ambient Operating Humidity | 10 to 90% noncondensing |
| NDAA Compliant | ✓ |
| Certifications | CE, FCC, IC, Anatel |
| Software | |
| Application Requirements | UniFi Network Version 9.0.114 and later |
FAQs
Q1: What is the Ubiquiti USW‑Flex‑2.5G‑8 used for?
A: It is a managed 8‑port 2.5 Gigabit Ethernet switch (with one 10 GbE uplink port) — ideal for upgrading network speed and adding managed switching to home networks, small offices, or compact server racks.
Q2: What ports and data rates does the USW‑Flex‑2.5G‑8 support?
A: It offers eight RJ45 ports capable of 10/100/1000/2500 Mbps, plus one 10 GbE RJ45/SFP+ combo uplink port — giving flexibility for high‑speed uplinks.
Q3: What performance specifications does the switch deliver?
A: The switching capacity is 60 Gbps full‑duplex (30 Gbps non‑blocking), with up to 45 Mpps forwarding rate, suitable for multiple high-bandwidth devices running simultaneously.
Q4: What mounting and physical installation options are supported?
A: The switch supports desktop placement, wall mounting (wall‑mount kit included), and DIN‑rail mounting (with optional kit), making it versatile for closets, small racks, or network cabinets.
Q5: What power options and features does the USW‑Flex‑2.5G‑8 have?
A: It can be powered via USB‑C (5 V DC) or via PoE (44–57 V DC) — enabling flexible deployment without needing a dedicated mains outlet.
Resources
Guide: UniFi Network for Retail and Hospitality — MS Dist
Guide: Setting Up a Ubiquiti UniFi Network for a Small Office or Business — MS Dist