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Airflow direction matched our cooling design perfectly.
EX4300-48T-DCI-TAA
EX4300 TAA, 48-Port 10/100/1000BaseT + 450W DC PS (Airflow i...
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EX4300-48T-DCI-TAA
EX4300 TAA, 48-Port 10/100/1000BaseT + 450W DC PS (Airflow i...
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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.
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.
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.
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.
To get the detailed certification, please go to the Compliance Center.
 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 |
Airflow direction matched our cooling design perfectly.
Consistent performance with DC power and TAA compliance.
No issues since deployment in secure environments.
Reliable access switch with good thermal behavior.
Meets enterprise access expectations.
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.
It provides 48 RJ45 10/100/1000BaseT ports delivering full-wire-speed Gigabit Ethernet connectivity.
No, the EX4300-48T-DCI-TAA does not include PoE capabilities; it’s optimized for non-PoE Gigabit access.
It uses an internal 450W DC power supply designed for -48 VDC input, meeting high-availability DC environments.