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Ubiquiti Flex 2.5G is a managed switch designed to work within the UniFi system. It features 8× 2.5G Ethernet ports and 1× Combo port, allowing you to choose between 10G Ethernet or SFP+. It offers high switching capacity, reaching up to 60 Gbps. Thanks to the 10G interface, it is an excellent choice as an access switch in locations where PoE power is not required. The switch supports basic Layer 2 management functions, including STP and RSTP, flow control, port isolation, and Jumbo frames. The 10G Ethernet port supports PoE+ input, enabling it to be powered from another location, such as a server room, without the need for a standard power adapter. You can also power the device via a USB-C port, and the package includes an appropriate power adapter. The device comes in a desktop-style enclosure, and the package includes a mounting bracket for wall installation.
Switch with 8× 2.5G Ethernet Ports, Combo Port (10G Ethernet / SFP+), and PoE Input
The offered product is a switch equipped with 8× 2.5G Ethernet ports and 1× Combo port, allowing you to choose between 10G Ethernet or SFP+. The 10G Ethernet port features a PoE+ input (IEEE 802.3at). You can also power the switch via a USB-C port, and the package includes a suitable power adapter. This switch is designed for UniFi networks built on a 2.5 Gbps infrastructure.
The inclusion of an SFP+ slot allows you to use a fiber optic connection. In this case, the connection distance can be very long (depending on the type of transceivers used), making it ideal for linking remote locations or different buildings.


Desktop Enclosure with Wall-Mount Option, Layer 2 Management
The device features a compact desktop-style enclosure, and the package includes a bracket for wall mounting. If needed, you can purchase an optional DIN rail mount or a magnetic mount. These accessories can be found in the related products section below the description.
The Flex 2.5G supports essential Layer 2 management functions, including port isolation, flow control, Jumbo frames, as well as STP and RSTP.
Application
The Ubiquiti Flex 2.5G is primarily designed for UniFi networks built on a 2.5 Gbps infrastructure. It serves as an ideal access switch in locations where PoE power is not required. The inclusion of a 10G port enables high-bandwidth connectivity to the main switch, ensuring fast speeds for devices connected to the Flex 2.5G. The PoE+ power input is useful when connecting the switch to a PoE-enabled switch, allowing it to be deployed in the target location without requiring a separate power adapter.

Specifications
Ubiquiti USW-Flex-2.5G-8 | |
Overview | |
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Dimensions | 212.9 x 76 x 33.5 mm (8.4 x 3 x 1.3") |
Port Layout |
8x 2.5G Ethernet 1x Combo - 10G Ethernet or SFP+ |
Form Factor | Compact Desktop, wall |
Performance | |
Switching Capacity | 60 Gb/s |
Total Non-Blocking Throughput | 30 Gb/s |
Forwarding Rate | 45 Mp/s |
Supported VLANs | 256 |
MAC Address Table Size | 4000 |
Layer 2 Features | |
STP & RSTP | Yes |
Egress Rate Limit | Yes |
Flow Control | Yes |
Storm Control | Yes |
Multicast & Broadcast Rate Limiting | Yes |
Port Isolation | Yes |
Port Mirroring | Yes |
Jumbo Frames | Yes |
Loop Protection | Yes |
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 Input Method |
USB Input PoE |
Power Supply | AC/DC, external, 15W |
Supported Voltage Range |
4.8—5.2V DC/USB 44V—57V PoE |
Management | Ethernet |
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 |
Software | |
UniFi Network | Version 9.0.114 and later |