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EX4300-48T-DC-AFI
EX4300, 48-Port 10/100/1000BaseT + 450W DC PS (Airflow in)
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EX4300-48T-DC-AFI
EX4300, 48-Port 10/100/1000BaseT + 450W DC PS (Airflow in)
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EX4300-48T-DC-AFI is a high-performance, rack-mount Ethernet switch designed with a robust architecture that delivers reliable Layer 2 and Layer 3 services for enterprise and data center networks. Its design incorporates 48 integrated 10/100/1000 twisted-pair Ethernet ports along with four dedicated SFP uplink ports, delivering efficient connectivity and power options optimized for DC environments.
EX4300-48T-DC-AFI features Virtual Chassis technology, which enables stacking of multiple switches to simplify management and scale performance seamlessly. With high switching capacity and low latency, this switch is ideally suited for campus networks, branch offices, and small to medium-sized data centers where predictable, cost-effective performance is critical.
EX4300-48T-DC-AFI price is is available on request. Get immediate quote.
Request bulk order quote for EX4300-48T-DC-AFI for additional pricing. Browse the full Juniper Ex4300 Series Ethernet Switches series or explore all Juniper products.
In a nationwide retail chain, the EX4300-48T-DC-AFI delivers 450W of DC-powered PoE to support 48 IP cameras and wireless APs per location. This use case ensures centralized video analytics, reduces cabling complexity, and delivers consistent uptime—enabling real-time loss prevention and store performance insights.
A large university deploys the EX4300-48T-DC-AFI in academic buildings to provide 48 Gigabit access ports backed by a 450W DC power supply. The switch leverages Virtual Chassis for simplified management and redundant power, delivering seamless connectivity for VoIP, e-learning labs, and research networks while minimizing downtime and operational costs.
A rural telecom operator uses the EX4300-48T-DC-AFI in off-grid cell sites, powered by solar-charged DC batteries. With 48-port Gigabit switching and 450W DC PS, the solution supports CPE routers, small-cell radios, and IoT sensors. This deployment increases network resilience, lowers diesel generator reliance, and ensures continuous connectivity in remote regions.
To get the detailed certification, please go to the Compliance Center.
 EX4300-48T-DC-AFI |  EX4300-32F |  EX4300-48T-AFI-TAA |  EX4300-48T-TAA |  EX4300-48T-DCI-TAA | |
|---|---|---|---|---|---|
| Depth | 11 inches | 10.8 inches | 11 inches | 11 inches | 12.8 inches |
| Ethernet Technology | 10/100/1000 | 10GbE | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 256 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.75 inches | 1.75 inches | 1.75 inches | 1.75 inches | 1.75 inches |
| IOS | N/A | IP Lite | IP Lite | IP Lite | IP Lite |
| 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-DC-AFI | EX4300-32F | EX4300-48T-AFI-TAA | EX4300-48T-TAA | EX4300-48T-DCI-TAA |
| Media Type Supported | Twisted Pair | Fiber | Twisted Pair | Twisted Pair | Twisted Pair |
| Memory | 256 MB | 512 MB | 4 GB | 256 MB | 512 MB |
| Number of Downlink Ports | 48 Ports | 32 Ports | 48 Ports | 48 Ports | 48 Ports |
| Number of Ethernet Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports |
| POE Support | Non POE | Non POE | Non POE | Non POE | Non POE |
| Port/Expansion Slot Details | 48 copper 10/100/1000 ports and 4 SFP uplink ports | N/A | 48 fixed 10/100/1000 Ethernet ports and 4 dedicated 1G SFP uplink ports | 48 x 10/100/1000 copper ports with 4 x 1G SFP uplink ports | 48 10/100/1000 copper ports, 4 SFP+ uplink ports |
| Power Consumption | 39 W | 90W | 370 W | N/A | 220 W |
| Power Source | N/A | AC Power Supply | Redundant Power Supply | AC Power Supply | AC Power Supply |
| Product Name | EX4300-48T-DC-AFI Ethernet Switch | Juniper Networks EX4300-32F Ethernet Switch | Juniper Networks EX4300-48T-AFI-TAA Ethernet Switch | Juniper Networks EX4300-48T-TAA Fixed Switch | Juniper Networks EX4300-48T-DCI-TAA |
| 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 | Yes | No | No |
| SFP Ports | 4 SFP Ports | 32 SFP+ Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports |
| Switching Capacity | 176 Gbps | 640 Gbps | 1280 Gbps | 128 Gbps | 1120 Gbps |
| Switching Capacity with Stacking | 352 Gbps | 640 Gbps | N/A | N/A | 320 Gbps |
| Uplink Configuration | 1G | 10G | 1G | 1G | 1G / 10G |
| Weight | 16 lbs | 7.5 lbs | 12 lbs | 11 lbs | 17 lbs |
| Width | 17.5 inches | 17.5 inches | 17.5 inches | 17.5 inches | 17.3 inches |
Airflow direction matched our data center needs.
Consistent switching performance.
Reliable and quiet operation.
Good enterprise access switch.
Stable since install.
The EX4300-48T-DC-AFI is a high-performance, 48-port 10/100/1000Base-T Ethernet switch with a 450 W DC power supply and front-to-back (airflow in) cooling designed for enterprise and data center deployments.
This switch provides 48 auto-sensing 10/100/1000 Mbps RJ-45 ports, delivering wire-speed Layer 2/3 connectivity for demanding business applications.
Yes. It offers 450 W of DC-powered PoE+ budget, supporting IEEE 802.3af/at devices such as IP phones, wireless access points, and surveillance cameras.
The EX4300-48T-DC-AFI accepts a -48 VDC to -60 VDC input and features front-to-back (airflow in) cooling to optimize thermal management in high-density racks.