



Ubiquiti UniFi Switching
Ubiquiti UniFi Switch Flex 2.5G (USW-Flex-2.5G-8)
The Switch Flex 2.5G is a flexible 8-port 2.5 GbE switch from Ubiquiti with a 10 GbE RJ45/SFP+ combination uplink port. The 10 GbE RJ45 side of that port is also a PoE+ input, so the switch can be powered over the uplink cable or from the included 5V, 3A USB-C adapter. It sits on a desk or mounts on a wall, with DIN and magnetic mounting available separately, and is managed in the UniFi Network application, version 9.0.114 and later.
Quick Glance
Key Features
Eight 2.5 GbE ports and a 10 GbE combo uplink
Eight RJ45 ports support 2.5G/1G/100M/10M. The combination uplink offers a 10 GbE RJ45 port (10G/5G/2.5G/1G/100M) and a 10G SFP+ port (10G/1G). Ubiquiti rates switching capacity at 60 Gbps, total non-blocking throughput at 30 Gbps and the forwarding rate at 45 Mpps.
Powered by PoE+ or the included USB-C adapter
The 10 GbE RJ45 combo port is a PoE+ input, so the switch can take its power from the upstream switch over the uplink cable (44V—57V PoE). Alternatively, use the included 5V, 3A USB-C adapter. Maximum power consumption is 14W on either input. The switch has no PoE output.
Desk, wall, DIN or magnetic mounting
The polycarbonate unit measures 212.9 x 76 x 33.5 mm and weighs 395 g. It sits on a desk or mounts on a wall; DIN and magnetic mounting are also supported, with those mounts sold separately. It is managed in UniFi Network (9.0.114 and later), with up to 256 VLANs, STP and RSTP, storm control, port isolation and port mirroring.
Detailed Specifications
Specifications are from Ubiquiti's official tech specs and store listing for the Switch Flex 2.5G (USW-Flex-2.5G-8). DIN and magnetic mounts are sold separately, and Ubiquiti states the EU version comes with an EU power plug only. Ubiquiti may update specifications without notice.
Need-to-Know
- Ubiquiti describes the uplink as one 10 GbE RJ45/SFP+ combination port: a 10 GbE RJ45 port and a 10G SFP+ port marked as a combo pair. SFP+ modules and cables are not included.
- The 10 GbE RJ45 combo port is also the PoE+ input. Ubiquiti's spec lists no PoE output, so the switch cannot power other devices.
- Two ways to power it: PoE+ into the 10 GbE RJ45 port (44V—57V PoE) or the included 5V, 3A USB-C adapter. Ubiquiti states the EU version comes with an EU power plug only.
- DIN rail and magnetic mounting are supported, but Ubiquiti sells those mounts separately.
- Managing the switch needs the UniFi Network application, version 9.0.114 or later.
Best For / Customer Benefits
Customer Benefits
- Expert consultation to choose between copper and SFP+ for the 10 GbE uplink.
- Help planning PoE+ power from the upstream switch, or use of the included USB-C adapter.
- VAT invoice issued with every order for UAE business buyers.
- Genuine Ubiquiti hardware, specified from Ubiquiti's own published spec sheet.
Best For
Frequently Asked Questions
Either by PoE+ into its 10 GbE RJ45 combo port, so one cable carries both the uplink and power, or from the included 5V, 3A USB-C adapter. Ubiquiti gives maximum power consumption as 14W with either input.
Ubiquiti lists a 10 GbE RJ45 port (10G/5G/2.5G/1G/100M) and a 10G SFP+ port (10G/1G), both marked as a combo port, and describes them as a 10 GbE RJ45/SFP+ combination uplink port. Use copper or an SFP+ module or cable to connect upstream.
No. The PoE+ port on this model is an input that powers the switch itself, and Ubiquiti lists no PoE output. For PoE outputs on the same design, look at the Switch Flex 2.5G PoE.
Ubiquiti lists the form factor as compact desktop, wall, DIN and magnetic, with the DIN and magnetic mounts sold separately. The switch measures 212.9 x 76 x 33.5 mm and weighs 395 g.
It is managed in the UniFi Network application, version 9.0.114 and later, with up to 256 VLANs, STP and RSTP, storm control, multicast and broadcast rate limiting, port isolation, port mirroring and loop protection.
Moving your desks to 2.5 GbE?
Tell us what you are connecting and how the switch will be uplinked and powered, and we will confirm whether the Switch Flex 2.5G fits.

