Cost per 90W Port: PSE Chassis, Expansion Modules and the 15–20% Budget Headroom You Are Paying For (2026)

Introduction: The High-Wattage PoE++ Challenge in Outdoor Deployments

In the UAE, where outdoor security and surveillance systems are critical for maintaining safety and operational efficiency, the demand for high-wattage Power over Ethernet (PoE++) solutions has surged. Specifically, the need for 60W and 90W PoE++ ports to power advanced outdoor PTZ (Pan-Tilt-Zoom) cameras and other security devices is growing. However, deploying these high-wattage PoE++ solutions comes with its own set of challenges, particularly in terms of cost and infrastructure requirements.

This article delves into the cost analysis of deploying high-wattage PoE++ ports, focusing on the Cisco Catalyst IE3400/IE3300, Arista CCS-720XP, and Juniper EX4300-48MP switches. We will explore the cost per 90W port, the role of chassis and expansion modules, and the often-overlooked budget headroom that comes with these deployments.

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1. Understanding High-Wattage PoE++: IEEE 802.3bt Classes and Real-World Applications

Before diving into the cost analysis, it's crucial to understand the IEEE 802.3bt PoE++ standard and its classes, which define the power requirements for different devices.

IEEE 802.3bt PoE++ Classes

Class	PSE Power (W)	PD Power (W)	Description
Class 5	45	40	High-power devices
Class 6	60	51	Higher-power devices
Class 7	75	62	Very high-power devices
Class 8	90	71.3	Maximum power for PoE++

Key takeaway: Class 8 (90W) is the highest power class defined by IEEE 802.3bt, making it ideal for power-hungry devices like heated PTZ cameras and advanced security systems.

In the UAE, where temperatures can soar above 50°C, deploying Class 8 PoE++ ports is essential for ensuring that devices like heated PTZ cameras function optimally. However, this also means that the switches and power sourcing equipment (PSE) must be capable of delivering and managing this high power efficiently. For more on this, read our article on PoE++ at 50°C and Above: Gulf Budget Derating, Fanless Convection Cooling & the Class-8 Ports You Must Drop (2026).

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2. Cost Analysis of High-Wattage PoE++ Switches

Cisco Catalyst IE3400/IE3300

The Cisco Catalyst IE3400 and IE3300 are DIN-rail industrial switches designed for harsh environments. They offer up to 4 x 802.3bt Type 4 ports with a system power budget of 480W.

Cost per 90W Port: Approximately $1,200
Key Features:
Managed
DIN-rail mountable
Supports IEEE 802.3bt
Robust environmental specifications

Arista CCS-720XP

The Arista CCS-720XP is a campus switch that offers managed 802.3af/at/bt PoE support, including up to 90W per RJ45 port.

Cost per 90W Port: Approximately $1,000
Key Features:
Managed
High-density PoE
Supports IEEE 802.3bt
Flexible deployment options

Juniper EX4300-48MP

The Juniper EX4300-48MP is a PoE-bt switch that offers high-power PoE support.

Cost per 90W Port: Approximately $1,100
Key Features:
Managed
High-density PoE
Supports IEEE 802.3bt
Scalable

Comparative Analysis

Feature	Cisco Catalyst IE3400/IE3300	Arista CCS-720XP	Juniper EX4300-48MP
Cost per 90W Port	$1,200	$1,000	$1,100
System Power Budget	480W	720W	1,440W
Port Count	4	48	48
Form Factor	DIN-rail	Rack-mount	Rack-mount
Environmental	Rugged	Standard	Standard

Key takeaway: While the Cisco Catalyst IE3400/IE3300 offers a rugged solution with a lower port count, the Arista CCS-720XP and Juniper EX4300-48MP provide higher port density and power budgets at a lower cost per port.

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3. Chassis and Expansion Modules: The Hidden Costs

When deploying high-wattage PoE++ switches, it's important to consider the cost of chassis and expansion modules. These components are often overlooked but can significantly impact the overall cost.

Cisco Catalyst IE3400/IE3300

Chassis Cost: The base chassis is included in the initial cost.
Expansion Modules: Additional modules can be added for more ports or higher power budgets, but they come at a premium.

Arista CCS-720XP

Chassis Cost: The base chassis is included in the initial cost.
Expansion Modules: Arista offers a range of expansion modules that can be added for increased port density and power.

Juniper EX4300-48MP

Chassis Cost: The base chassis is included in the initial cost.
Expansion Modules: Juniper provides expansion modules that can be added for more ports and power.

Key takeaway: Expansion modules can add 15-20% to the overall cost of the switch. It's essential to factor this into your budget when planning deployments.

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4. Multi-Vendor Switch Compatibility and CLI Configuration

Cisco Configuration

1Switch(config)# interface GigabitEthernet1/0/1
2Switch(config-if)# power inline auto
3Switch(config-if)# exit
4Switch(config)# show power inline GigabitEthernet1/0/1 detail

Arista Configuration

1Switch(config)# interface Ethernet1
2Switch(config-if-Et1)# poe limit 90 watts
3Switch(config-if-Et1)# exit
4Switch(config)# show poe interface ethernet 1 detail

Juniper Configuration

1Switch# set poe interface ge-0/0/1 ultrahigh-power
2Switch# commit
3Switch# show poe interface ge-0/0/1

Key takeaway: When configuring multi-vendor switches, it's crucial to use the correct CLI commands to ensure that the PoE++ ports are configured correctly. Always verify the configuration using the appropriate 'show' commands.

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5. Field Commissioning and Fault State Management

Deploying high-wattage PoE++ solutions requires careful field commissioning to ensure that all ports are functioning correctly. This includes 802.3bt Class Detection, LLDP Negotiation, and Port State Acceptance Tests.

802.3bt Class Detection

Ensure that the switch correctly identifies the PoE++ class of the connected device.

LLDP Negotiation

Use LLDP to negotiate the power requirements between the switch and the device.

Port State Acceptance Tests

Perform acceptance tests to verify that the port is in the correct state and that the device is receiving the appropriate power.

Key takeaway: For a detailed guide on fault state management, refer to our article on PoE++ Fault States Decoded: power-deny, faulty, off & err-disable — What Each State Means and How to Clear It (2026).

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Conclusion

Deploying high-wattage PoE++ solutions in the UAE requires a thorough understanding of the costs and infrastructure requirements. While the initial cost per 90W port can be significant, it's essential to consider the additional costs of chassis and expansion modules, as well as the power budget and environmental factors.

By carefully selecting the right switch and configuring it correctly, you can ensure that your outdoor PTZ cameras and security systems are powered efficiently and reliably. Always remember to factor in the 15-20% budget headroom for expansion modules and other hidden costs.

Final Key takeaway: When planning your PoE++ deployment, consider the total cost of ownership, including chassis, expansion modules, and power budget, to avoid unexpected expenses and ensure a successful deployment.

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For more detailed insights into specific PoE++ switch comparisons and fault state management, check out our related articles: