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Airflow direction matched our cooling design perfectly.
EX4300-48T-DCI-TAA
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EX4300 TAA, 48-Port 10/100/1000BaseT + 450W DC PS (Airflow i...
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EX4300-48T-DCI-TAA
- Description:
- EX4300 TAA, 48-Port 10/100/1000BaseT + 450W DC PS (Airflow in)
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EX4300-48T-DCI-TAA Overview
EX4300-48T-DCI-TAA is a high-performance, rack-mount Ethernet switch engineered with a robust architecture tailored for both Layer 2 and Layer 3 environments. It is designed with versatile power options featuring an AC power supply, and its 48 fixed 10/100/1000 copper ports combined with 4 dedicated SFP+ uplink ports ensure flexible connectivity for enterprise and data center interconnect use cases.
EX4300-48T-DCI-TAA supports scalable Virtual Chassis stacking that enhances network performance and simplifies management in growing environments. Its optimized switching capacity and stacking throughput make it ideal for campus networks, branch offices, and high-density access deployments while delivering reliable performance and low latency.
EX4300-48T-DCI-TAA price is is available on request. Get immediate quote.
Request bulk order quote for EX4300-48T-DCI-TAA for additional pricing. Browse the full Juniper Ex4300 Series Ethernet Switches series or explore all Juniper products.
EX4300-48T-DCI-TAA Specifications
- Product Type
- Switch
- Power Source
- AC Power Supply
- Layer Supported
- Layer 2 / Layer 3
- Form Factor
- Rack-mount
- Number of Ethernet Ports
- 24–48 Ports
- Manageable
- Managed
- Ethernet Technology
- 10/100/1000
- Media Type Supported
- Twisted Pair
- Redundant Power Supply Supported
- No
- POE Support
- Non POE
- SFP Ports
- 4 SFP Ports
- Rack Units
- 1 RU
- Interface Ports
- 10/100/1000
- Number of Downlink Ports
- 48 Ports
- Flash Memory
- 256 MB
- Power Consumption
- 220 W
- Height
- 1.75 inches
- Memory
- 512 MB
- Width
- 17.3 inches
- IOS
- IP Lite
- Depth
- 12.8 inches
- Weight
- 17 lbs
- Switching Capacity with Stacking
- 320 Gbps
- Uplink Configuration
- 1G / 10G
- Switching Capacity
- 1120 Gbps
- Manufacturer Part Number
- EX4300-48T-DCI-TAA
- Port/Expansion Slot Details
- 48 10/100/1000 copper ports, 4 SFP+ uplink ports
- Product Name
- Juniper Networks EX4300-48T-DCI-TAA
EX4300-48T-DCI-TAA Use Case
Secure, TAA-Compliant Branch Connectivity for Federal Agencies
The EX4300-48T-DCI-TAA-EX4300 TAA, 48-Port 10/100/1000BaseT + 450W DC PS (Airflow in) switch ensures Trade Agreements Act (TAA) compliance in US federal branch offices, integrating seamlessly with 48V DC distribution and delivering gigabit connectivity. Virtual Chassis technology unifies management across dispersed sites. Outcome: Achieves procurement compliance, reduces power conversion losses by 20%, and centralizes security enforcement to lower risk and OPEX.
Scalable Virtual Chassis Leaf for High-Density Data Centers
In high-density data center leaf deployments, the EX4300-48T-DCI-TAA-EX4300 TAA, 48-Port 10/100/1000BaseT + 450W DC PS (Airflow in) forms a single Virtual Chassis of up to 10 switches, delivering up to 480 ports under one control plane. Its airflow-in design optimizes hot-aisle cooling and native DC power ties into UPS infrastructure. Benefit: Cuts provisioning time by 60%, ensures sub-5ms failover for mission-critical applications, and streamlines capacity scaling with superior energy efficiency.
Resilient DC-Powered Edge Networking for Remote Telecom Sites
At remote cellular and microgrid locations, the EX4300-48T-DCI-TAA-EX4300 TAA, 48-Port 10/100/1000BaseT + 450W DC PS (Airflow in) eliminates AC/DC conversion by drawing DC power directly from solar/battery systems while supporting PoE devices and high-temperature operation. Outcome: Boosts network uptime to 99.99%, reduces energy costs by up to 15%, and simplifies rack deployments with minimal maintenance.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| EX4300-48T-DCI-TAA |  EX4300-48P-TAA |  EX4300-24T-TAA |  EX4300-32F-DC-TAA |  EX4300-48T-AFI | |
|---|---|---|---|---|---|
| Depth | 12.8 inches | 17.3 inches | 10.7 inches | 10.7 inches | 14.9 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 256 MB | 64 MB | 256 MB | 256 MB | 256 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.75 inches | 1.73 inches | 1.73 inches | 1.73 inches | 1.73 inches |
| IOS | IP Lite | LAN Base | IP Services | IP Lite | IP Services |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Layer Supported | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | EX4300-48T-DCI-TAA | EX4300-48P-TAA | EX4300-24T-TAA | EX4300-32F-DC-TAA | EX4300-48T-AFI |
| Media Type Supported | Twisted Pair | Twisted Pair | Twisted Pair / Fiber | Fiber | Twisted Pair |
| Memory | 512 MB | 256 MB | 512 MB | 512 MB | 512 MB |
| Number of Downlink Ports | 48 Ports | 48 Ports | 24 Ports | 32 Ports | 48 Ports |
| Number of Ethernet Ports | 24–48 Ports | 24–48 Ports | 12–24 Ports | N/A | 24–48 Ports |
| POE Support | Non POE | POE+ | Non POE | Non POE | Non POE |
| Port/Expansion Slot Details | 48 10/100/1000 copper ports, 4 SFP+ uplink ports | N/A | 24 x 10/100/1000 Ethernet ports and 4 x 1/10G SFP+ uplink ports | N/A | 48 x 10/100/1000 RJ45 ports and 4 x 1Gb SFP ports |
| Power Consumption | 220 W | 370 W | 46 W | 70 W | 95W |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply | DC Power Supply | AC Power Supply |
| Product Name | Juniper Networks EX4300-48T-DCI-TAA | Juniper EX4300-48P-TAA Ethernet Switch | EX4300-24T-TAA Ethernet Switch | Juniper Networks EX4300-32F-DC-TAA | EX4300-48T-AFI Ethernet Switch |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | No | No | No | No | No |
| SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 32 SFP Ports | 4 SFP Ports |
| Switching Capacity | 1120 Gbps | 176 Gbps | 128 Gbps | 128 Gbps | 176 Gbps |
| Switching Capacity with Stacking | 320 Gbps | 320 Gbps | N/A | 256 Gbps | 352 Gbps |
| Uplink Configuration | 1G / 10G | 1G | 1G / 10G | 10G | 1G |
| Weight | 17 lbs | 12 lbs | 7.5 lbs | 7.3 lbs | 18 lbs |
| Width | 17.3 inches | 17.5 inches | 17.5 inches | 17.5 inches | 17.3 inches |
Reviews & Ratings
B
Benedict Shaw
5
Consistent performance with DC power and TAA compliance.
O
Oliver Fenwick
5
No issues since deployment in secure environments.
R
Rupert Hayes
4
Reliable access switch with good thermal behavior.
C
Calum Worthington
5
Meets enterprise access expectations.
Questions & Answers
What is the Juniper EX4300-48T-DCI-TAA?
The Juniper EX4300-48T-DCI-TAA is a TAA-compliant 48-port 10/100/1000BaseT Ethernet switch with an internal 450W DC power supply and front-to-back airflow design.
What are the port specifications of the EX4300 TAA 48-Port switch?
It provides 48 RJ45 10/100/1000BaseT ports delivering full-wire-speed Gigabit Ethernet connectivity.
Does the EX4300-48T-DCI-TAA support Power over Ethernet (PoE)?
No, the EX4300-48T-DCI-TAA does not include PoE capabilities; it’s optimized for non-PoE Gigabit access.
What type of power supply does the EX4300-48T-DCI-TAA use?
It uses an internal 450W DC power supply designed for -48 VDC input, meeting high-availability DC environments.
Is the EX4300-48T-DCI-TAA TAA compliant?
Yes, the EX4300-48T-DCI-TAA is Trade Agreements Act (TAA) compliant for use in U.S. government and regulated procurement.
What is the airflow direction in the EX4300 TAA 48-Port switch?
The switch features front-to-back (airflow-in) cooling to conform with data center thermal management standards.
What switching capacity does the EX4300-48T-DCI-TAA offer?
It delivers up to 176 Gbps of switching capacity and 260 Mpps forwarding performance for high-throughput environments.
Does the EX4300 support Juniper Virtual Chassis technology?
Yes, it supports Virtual Chassis, allowing up to 10 EX4300 switches to operate as a single logical device.
How is the EX4300-48T-DCI-TAA managed?
Management is via Junos OS CLI, Juniper Network Director, or RESTful APIs for centralized configuration and monitoring.
What are the primary use cases for the EX4300-48T-DCI-TAA?
Ideal for campus access, data-center top-of-rack, and SMB aggregation requiring TAA compliance and high reliability.
What uplink options are available on the EX4300 TAA 48-Port switch?
It includes four built-in 10GbE SFP+ ports supporting fiber optics or DAC cables for high-speed aggregation.
What is the operating temperature range for the EX4300-48T-DCI-TAA?
The switch operates reliably between 0°C and 40°C (32°F to 104°F) in standard data center conditions.
Which software features are included in the EX4300-48T-DCI-TAA?
Junos OS provides advanced Layer 2/3 switching, EVPN-VXLAN, Virtual Chassis, and automation via Python and NETCONF.
What warranty does the EX4300-48T-DCI-TAA come with?
It includes a limited lifetime hardware warranty with next-business-day advanced replacement service.
Can the EX4300-48T-DCI-TAA support redundant DC power supplies?
Yes, it supports dual internal DC power supplies for full redundancy when equipped with an optional secondary unit.
What is the maximum Virtual Chassis member count on the EX4300?
You can stack up to 10 EX4300 switches in a single Virtual Chassis cluster for simplified management.