Skip to content


by Juniper
Product Line: Juniper EX4300 Series
Product Type: Switch
Sold out
Original price $0.00 - Original price $0.00
Original price
$0.00 - $0.00
Current price $0.00
Title: Surplus

Orders typically ship within 1-3 Business days, if you need an item to ship sooner please contact us.

Product Description

The EX4300-48T is equipped with 48 10/100/1000BASE-T access ports and supports up to four 40GbE ports through an optional module, providing high-density connectivity. It features a 350 W AC power supply and supports a 320 Gbps Virtual Chassis interconnect capacity, allowing up to 10 units to function as a single device for scalable network architecture. With packet switching capacities up to 248 Gbps unidirectional/496 Gbps bidirectional and a throughput of 369 Mpps, this switch ensures efficient data handling across enterprise networks.

Key Feature for the EX430048T

  • What are the port configurations available on the 48-port 10/100/1000BASE-T + 350 W AC PS?
    The device offers 48 10/100/1000BASE-T ports, up to four 40GbE ports with an additional module, and a power supply rating of 350 W AC.
  • How does the QSFP+ DAC contribute to the device's functionality?
    The QSFP+ DAC is required for Virtual Chassis interconnects, allowing up to 10 units to combine as a single logical device with a backplane capacity of 320 Gbps.
  • Can you detail the airflow design of the base unit?
    The base unit features an AFO (Front-to-back airflow) design, ensuring efficient cooling with a PSU airflow of 7.5 cubic feet per minute.
  • What are the dimensions and weight of the system with the power supply installed?
    With the power supply, the dimensions are 17.36 x 1.72 x 17.51 in (44.1 x 4.37 x 44.47 cm) and the system weight is 2.4 lb (1.1 kg).
  • What packet switching capacities does the device offer?
    The device provides packet switching capacities of 248 Gbps (unidirectional) and 496 Gbps (bidirectional).
  • Discuss the GbE port density and throughput capabilities of the system.
    The system supports a GbE port density of 56 (48 host ports + four 40GbE ports + optional four-port 1/10GbE uplink module) and delivers throughput of 369 Mpps (wire speed).
  • What are the operating and storage temperature ranges for this device?
    Operating temperature ranges from 32° F to 113° F, while storage temperature ranges from -40° F to 158° F.
  • How does the operating altitude affect the device's performance?
    The device operates effectively up to 10,000 ft (3,049 m) and can be stored up to 16,000 ft (4,877 m) without impacting performance.
  • What is the relative humidity tolerance for non-operating conditions?
    The relative humidity tolerance for non-operating conditions ranges from 0% to 95% (noncondensing).
  • Are the fan modules in this device replaceable, and if so, how many are there?
    Yes, the device includes two field-replaceable fan modules, each weighing 0.33 lb (0.15 kg).

Product Review

The Juniper EX4300-48T switch offers a high-density configuration with 48 10/100/1000BASE-T ports and the flexibility to add up to four 40GbE ports, catering to diverse networking demands. With a backplane capacity of 320 Gbps and the ability to form a Virtual Chassis of up to 10 units, this model enables scalable and simplified management for growing network environments. However, the requirement to purchase the QSFP+ DAC for Virtual Chassis connectivity separately may increase the total cost of ownership and complexity for users aiming for extensive network configurations.


The Juniper EX4300-48T is a versatile switch designed for high-performance networking requirements. This device offers a 48-port configuration supporting 10/100/1000BASE-T interfaces, ensuring compatibility with a wide range of network demands. It also incorporates a 350 W AC power supply, highlighting its capability to support operations without requiring immediate upgrades to the power infrastructure. Key hardware specifications include: - The switch provides four 40GbE ports, enhancing its utility in environments where high-speed connectivity is paramount. This feature allows for significant expansion of network bandwidth, catering to evolving business needs. - A notable aspect of the EX4300-48T is its Virtual Chassis technology, which supports a backplane capacity of 320 Gbps. This enables the interconnection of up to 10 units, facilitating the management of these units as a single logical device. Such capability simplifies network operations and enhances scalability. - The device measures 17.36 inches in width, 1.72 inches in height, and 16.38 inches in depth for the base unit, with slight variations when the power supply and front module are installed. Its compact size allows for efficient utilization of rack space in data centers. Additional specifications include:
  • Airflow is designed to support front-to-back cooling, optimizing thermal management and ensuring reliable operation under varied conditions.
  • The switch's packet switching capacities reach up to 248 Gbps unidirectional and 496 Gbps bidirectional, supporting high volumes of data traffic.
  • With a throughput of 369 Mpps, the EX4300-48T guarantees wire-speed performance, ensuring that network efficiency is maintained.
The system's operating temperature ranges from 32° F to 113° F, accommodating a wide array of environmental conditions. For storage, the temperature can vary from -40° F to 158° F, offering flexibility in terms of deployment locations. The device is designed to operate at altitudes up to 10,000 feet, with non-operating altitudes extending up to 16,000 feet. Relative humidity tolerance in non-operating conditions ranges from 0% to 95%, noncondensing, indicating the switch's durability in varying storage environments. In summary, the Juniper EX4300-48T is engineered to meet the demands of modern network environments. Its combination of high port density, scalability through Virtual Chassis technology, and robust performance metrics make it a suitable choice for organizations looking to optimize their networking infrastructure. Its compact form factor, coupled with efficient power usage and thermal management features, ensures that it can be deployed in a variety of settings, from small offices to large data centers.


Part NumberJuniper EX4300-48T
ManufacturerJuniper Networks
Port Configuration48 ports, 10/100/1000BASE-T Ethernet
Expansion Slots for 40GbEUp to 4 using module
AC Power Supply Capacity350 Watts
Cooling MethodFront-to-back airflow (AFO)
Virtual Chassis Backplane Speed320 Gbps for up to 10 interconnected units
Dimensions - Base Unit17.36 x 1.72 x 16.38 inches
Dimensions - With Power Supply17.36 x 1.72 x 17.51 inches
Dimensions - With Power Supply and Front Module17.36 x 1.72 x 18 inches
Unit Weight2.4 pounds
Fan Module Weight0.33 pounds
Replaceable Fans2
Fan Airflow7.5 cubic feet per minute
Switching Capacity248 Gbps single, 496 Gbps dual
Port Density56 total (48 Ethernet + 4 40GbE + 4 optional uplink)
Throughput369 million packets per second (Mpps)
Minimum Operating Temperature32°F
Maximum Operating Temperature113°F
Minimum Storage Temperature-40°F
Maximum Storage Temperature158°F
Maximum Operating Altitude10,000 feet
Maximum Non-operating Altitude16,000 feet
Humidity (Non-operating)0% to 95%, non-condensing

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare