Ubiquiti USW-Flex-2.5G-8-PoE 2.5G PoE Switch Instruction Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of the Ubiquiti USW-Flex-2.5G-8-PoE 2.5G PoE Switch. Please read this manual thoroughly before using the device to ensure proper functionality and safety.

2. Safety Information

Always follow basic safety precautions to reduce the risk of fire, electric shock, and injury to persons, including the following:

Read all instructions carefully.
Do not open the device enclosure.
Do not expose this product to water or moisture.
Ensure proper ventilation to prevent overheating.
Use only attachments/accessories specified by the manufacturer.
Disconnect power before cleaning.
Refer all servicing to qualified service personnel.

3. Package Contents

Verify the following items are included in your package:

Package contents for USW-Flex-2.5G-8 and USW-Flex-2.5G-8-PoE — Package contents for USW-Flex-2.5G-8 (top) and USW-Flex-2.5G-8-PoE (bottom), illustrating included items such as the switch unit, power adapter (for non-PoE model), wall mount bracket, and screws.

USW-Flex-2.5G-8-PoE Switch Unit
Wall Mount Bracket
Screws
Note: AC power adapter is sold separately for the PoE model.

For the USW-Flex-2.5G-8 model (non-PoE), the package includes:

USW-Flex-2.5G-8 Switch Unit
USB-C Power Adapter (5V DC, 3A)
Wall Mount Bracket
Screws

4. Product Overview

The USW-Flex-2.5G-8-PoE is a compact 2.5 Gigabit PoE switch designed for flexible deployment. It features multiple high-speed ports and PoE capabilities.

Front and rear view of the USW-Flex-2.5G-8-PoE switch with port labels and dimensions — Front and rear view of the USW-Flex-2.5G-8-PoE switch with port labels, system LED, power input, reset button, and dimensions.

4.1. Front Panel

(8) 2.5 GbE, PoE+++ RJ45 ports: Connect your PoE-powered devices or other network devices.
System LED: Indicates device status.

4.2. Rear Panel

10G SFP+ / 10 GbE RJ45 combination port: Provides high-speed uplink connectivity. Note: Only one of these combination ports can be used at a time.
PoE+++ in port: Power input via PoE+++.
Power input*: DC power input. *AC power adapter sold separately.
Reset button: Used for device reset.

4.3. Dimensions

Length: 212.9 mm
Width: 99.4 mm
Height: 33.5 mm

5. Setup

5.1. Mounting Options

The USW-Flex-2.5G-8-PoE supports multiple mounting options:

Desktop Placement: Simply place the switch on a flat, stable surface.
Wall-Mount: Use the included wall mount bracket and screws to secure the device to a wall.
DIN Rail-Mount: A DIN rail mount kit is available separately for industrial installations.

Hardware configuration diagram for the USW-Flex-2.5G-8-PoE, showing mounting options — Hardware configuration diagram for the USW-Flex-2.5G-8-PoE, illustrating various mounting options.

5.2. Powering the Device

The USW-Flex-2.5G-8-PoE can be powered via two methods:

PoE+++ Input: Connect a PoE+++ compliant power source to the "PoE+++ in" port.
DC Power Input: Connect an external AC power adapter (sold separately) to the "Power input" port.

5.3. Network Connection

Connect your network devices (e.g., computers, access points, IP cameras) to the (8) 2.5 GbE, PoE+++ RJ45 ports using Ethernet cables.
For uplink to your main network, connect an Ethernet cable to the 10G SFP+ / 10 GbE RJ45 combination port. Ensure only one of the combination ports (SFP+ or RJ45) is used at a time.

6. Operating Instructions

6.1. System LED Indicators

The System LED provides visual feedback on the device's status:

Solid White: Device is powered on and operating normally.
Flashing White: Device is booting up or performing a firmware upgrade.
Solid Blue: Device is managed by a UniFi Network Controller.
Flashing Blue: Device is in discovery mode or ready for adoption by a UniFi Network Controller.
Solid Amber: Error state or device is in standalone mode without controller management.

6.2. PoE Functionality

The (8) 2.5 GbE RJ45 ports support PoE+++, allowing you to power compatible devices directly through the Ethernet cable. Ensure your connected devices are PoE compatible and do not exceed the switch's total PoE budget.

6.3. Resetting the Device

To reset the device to factory default settings, press and hold the Reset button for approximately 10 seconds until the System LED flashes rapidly.

7. Maintenance

7.1. Cleaning

Ensure the device is powered off and disconnected from all power sources before cleaning. Use a soft, dry cloth to wipe the exterior of the switch. Do not use liquid cleaners or aerosol sprays.

7.2. Firmware Updates

Regularly check for and install firmware updates to ensure optimal performance, security, and access to new features. Firmware updates are typically managed through the UniFi Network Controller.

7.3. Environmental Considerations

Operate the switch within the specified temperature and humidity ranges (0 to 40°C, 10 to 90% non-condensing humidity). Avoid placing the device in direct sunlight or near heat sources.

8. Troubleshooting & FAQ

8.1. Common Issues

Device not powering on: Ensure the power source (PoE+++ or AC adapter) is correctly connected and functional.
No network connectivity: Check Ethernet cable connections, verify connected devices are operational, and ensure the uplink port is properly configured.
PoE devices not receiving power: Confirm devices are PoE compatible, check cable integrity, and ensure the switch's PoE budget is not exceeded.

8.2. Frequently Asked Questions

Q: Does the USW-Flex-2.5G-8-PoE include an AC power adapter?: A: No, the AC power adapter for the USW-Flex-2.5G-8-PoE model is sold separately. It can be powered via PoE+++ input or a separately purchased DC power adapter.
Q: Can I use both the 10G SFP+ and 10 GbE RJ45 combination ports simultaneously?: A: No, only one of the combination ports (SFP+ or RJ45) can be active at a time for uplink connectivity.

9. Specifications

Below are the detailed specifications for the USW-Flex-2.5G-8-PoE model. For comparison with other models, refer to the specifications table image.

Detailed specifications comparison table for various Ubiquiti switch models — Detailed specifications comparison table for USW-Flex-2.5G-8, USW-Flex-2.5G-8-PoE, USW-Lite-8-PoE, and USW-Lite-16-PoE models.

Feature	USW-Flex-2.5G-8-PoE
Dimensions	212.9 x 76 x 33.5 mm
Weight	567 g
Network Interface	(8) 2.5 GbE RJ45, (1) 10G SFP+
PoE Interface	8 PoE+++ ports
Switching Capacity	60 Gbps
Packet Forwarding Rate	45 Mpps
MAC Address Table	4000
VLAN Support	256
Max Power Consumption	210 W
PoE Budget	210 W
Power Method	(1) AC/DC Adapter (sold separately), (1) PoE+++
Installation Method	Desktop, Wall Mount
Cooling	Passive
Operating Temperature	0 to 40°C (32 to 104°F)
Operating Humidity	10 to 90% non-condensing
L2 Features	Flow Control, Storm Control, Broadcast/Multicast Rate Limit, Port Isolation, Port Mirroring, Jumbo Frame, STP/RSTP, IGMP Snooping, Loop Protection, DHCP Snooping/Guarding, Egress Rate Limit, LLDP-MED, MAC-based Port Restriction, ACL Device Isolation, IP-based ACL and Network Isolation.

10. User Tips

For optimal performance and centralized management, integrate your USW-Flex-2.5G-8-PoE switch with a UniFi Network Controller.
When planning your installation, carefully consider the power requirements of your PoE devices to ensure the total PoE budget of 210W is not exceeded.
If utilizing the 10G SFP+ / 10 GbE RJ45 combination port, remember that only one interface can be active at a time. Choose the one that best suits your network infrastructure's uplink needs.

11. Warranty and Support

For warranty information, technical support, and additional resources, please refer to the official Ubiquiti website or contact their customer service. Keep your purchase receipt for warranty claims.

For return and refund policies, please refer to the seller's specific terms and conditions.