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PoE capacity handled all endpoints without issues.
EX3400-48P-TAA
EX3400 48PORT 10/100/1000BASET POE+ 4X1/10G SFP/SFP+ 2X40G Q...
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EX3400-48P-TAA
EX3400 48PORT 10/100/1000BASET POE+ 4X1/10G SFP/SFP+ 2X40G Q...
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EX3400-48P-TAA is a high-performance, rack-mount Ethernet switch built on a robust and scalable architecture that supports both Layer 2 and Layer 3 operations. Designed for modern enterprise and campus networks, it offers 48 PoE+ enabled 10/100/1000 ports alongside 4 dedicated 10Gb SFP+ uplink ports, ensuring reliable connectivity for high-density environments.
Engineered for optimal power utilization and future-proof network expansion, the EX3400-48P-TAA supports Virtual Chassis stacking for simplified management and enhanced performance. Its versatile design and advanced switching capabilities make it an ideal choice for applications ranging from branch networks to mission-critical enterprise systems.
EX3400-48P-TAA price is is available on request. Get immediate quote.
Request bulk order quote for EX3400-48P-TAA for additional pricing. Browse the full Juniper Ex3400 Series Ethernet Switches series or explore all Juniper products.
In a 1,500-seat smart office deployment, the EX3400-48P-TAA delivers 48 PoE+ ports to power Wi-Fi 6 APs, IP phones and environmental sensors while four 1/10G SFP+ and two 40G QSFP+ uplinks enable high-speed backhaul to the data center. The result is centralized PoE management, automated VLAN segmentation and simplified Junos OS provisioning, delivering up to 50% faster rollout of UC and IoT services with full redundancy via MLAG.
A national retail chain uses the EX3400-48P-TAA at every 2,000 sq ft store to aggregate POS terminals, surveillance cameras and local servers. The 48-port 10/100/1000BASE-T PoE+ switch powers PoS and HD cameras, while dual 40G QSFP+ uplinks provide high-capacity transport to regional hubs. This architecture ensures 99.99% uptime with active/active MLAG, centralized policy enforcement and simplified firmware management via Junos Space.
In a VMware NSX or EVPN/VXLAN environment, the EX3400-48P-TAA serves as a top-of-rack leaf switch connecting 48 server NICs at 1/10G speeds and two 40G QSFP+ links to the spine. Built-in MLAG and hardware-accelerated overlay forwarding deliver sub-microsecond latency and non-blocking throughput for east-west traffic. The outcome is a scalable 2-tier fabric supporting 10K+ VMs, automated provisioning and simplified life-cycle management under Juniper Apstra.
To get the detailed certification, please go to the Compliance Center.
 EX3400-48P-TAA |  EX3400-48T-AFI |  EX3400-48T |  EX3400-24P |  EX3400-24T-DC | |
|---|---|---|---|---|---|
| Depth | 11.8 inches | 12 inches | 12.4 inches | 11 inches | 11 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 256 MB | 256 MB | 256 MB | 256 MB | 32 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.73 inches | 1.73 inches | 1.73 inches | 1.75 inches | 1.75 inches |
| IOS | LAN Base | IP Lite | LAN Base | IP Lite | LAN Base |
| 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 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | EX3400-48P-TAA | EX3400-48T-AFI | EX3400-48T | EX3400-24P | EX3400-24T-DC |
| Media Type Supported | Twisted Pair / Fiber | Twisted Pair | Twisted Pair | Twisted Pair / Fiber / Combo | Twisted Pair |
| Memory | 256 MB | 512 MB | 512 MB | 256 MB | 256 MB |
| Number of Downlink Ports | 48 Ports | 48 Ports | 48 Ports | 24 Ports | 24 Ports |
| Number of Ethernet Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports | 12–24 Ports | 12–24 Ports |
| POE Support | POE+ | Non POE | Non POE | POE+ | Non POE |
| Port/Expansion Slot Details | 48 PoE 10/100/1000 ports and 4 10Gb SFP+ uplink ports | 48 fixed 10/100/1000 Ethernet ports and 4 dedicated 1G SFP uplink ports | N/A | 24 PoE ports and 4 SFP uplink ports | N/A |
| Power Consumption | N/A | N/A | 95W | 370 W | 25 W |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply | DC |
| Product Name | Juniper EX3400-48P-TAA Ethernet Switch | Juniper EX3400-48T-AFI Ethernet Switch | Juniper EX3400-48T Ethernet Switch | Juniper EX3400-24P Ethernet Switch | Juniper Networks EX3400-24T-DC 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 | Yes | No |
| SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports |
| Switching Capacity | 1440 Gbps | 128 Gbps | 176 Gbps | 128 Gbps | 128 Gbps |
| Switching Capacity with Stacking | 1440 Gbps | 256 Gbps | 352 Gbps | 320 Gbps | N/A |
| Uplink Configuration | 10G | 1G | 1G | 1G | 1G |
| Weight | 13 lbs | 10 lbs | 14 lbs | 10 lbs | 6 lbs |
| Width | 17.5 inches | 17.5 inches | 17.5 inches | 17.5 inches | 17.5 inches |
PoE capacity handled all endpoints without issues.
TAA version worked exactly as expected.
Reliable access switch for phones and APs.
Good uptime record.
Strong enterprise switch.
The Juniper EX3400-48P-TAA is a TAA-compliant 1U Ethernet switch offering 48 10/100/1000BASE-T PoE+ ports, 4 SFP/SFP+ 1/10GbE uplinks, 2 QSFP+ 40GbE uplinks, Virtual Chassis stacking, and the full Junos OS feature set for resilient, high-performance enterprise networking.
The EX3400-48P-TAA delivers up to 740 W of total PoE+ power, supporting 30 W per port across 48 ports subject to the aggregate budget.
It provides 4 SFP/SFP+ ports configurable at 1/10 GbE and 2 QSFP+ ports for 40 GbE uplinks, enabling flexible high-speed aggregation.
Yes. The EX3400-48P-TAA chassis and power supplies are manufactured in TAA-approved facilities to meet U.S. federal procurement requirements.