Skip to content


by Juniper
Product Line: Juniper EX4300-48T-AFI
Product Type: Switch
Original price $0.00 - Original price $1,720.00
Original price
$0.00 - $1,720.00
Current price $1,720.00
Title: Used

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

Product Description

The EX4300-48T-AFI is equipped with 48 10/100/1000BASE-T ports, and supports up to four 40GbE ports for high-density, high-speed networking. It features a 350 W AC power supply with back-to-front airflow (AFO) design for efficient cooling, and a 320 Gbps Virtual Chassis interconnect capability that allows up to 10 units to operate as a single device. With a packet switching capacity of 248 Gbps (unidirectional)/496 Gbps (bidirectional) and a throughput of 369 Mpps, this switch is designed for optimal performance and scalability in demanding environments.

Key Feature for the EX4300-48T-AFI

  • What is the maximum number of 10/100/1000BASE-T ports available on this device?
    The device offers 48 10/100/1000BASE-T ports.
  • Can you detail the power supply specifications for the QSFP+ DAC for Virtual Chassis?
    The power supply rating is 350 W AC with back-to-front airflow.
  • How many 40GbE ports does the device support, and is expansion possible?
    It supports four 40GbE ports, with expansion possible through a module.
  • What are the dimensions of the base unit?
    The base unit measures 17.36 x 1.72 x 16.38 inches (44.1 x 4.37 x 41.6 cm).
  • Describe the Virtual Chassis interconnect's backplane capacity.
    The backplane offers a 320 Gbps Virtual Chassis interconnect to link up to 10 units as a single logical device.
  • What is the total system weight, including the fan module?
    The system weight is 2.4 lb (1.1 kg) with an additional 0.33 lb (0.15 kg) for the fan module.
  • How many field-replaceable fans are included, and what is their airflow capacity?
    There are two field-replaceable fans, each with a 7.5 cubic feet per minute airflow capacity.
  • What are the packet switching capacities of the device?
    The device has a unidirectional capacity of 248 Gbps and a bidirectional capacity of 496 Gbps.
  • What is the operational temperature range for this networking hardware?
    The operating temperature ranges from 32° F to 113° F.
  • What is the device's throughput capability in millions of packets per second (Mpps)?
    The throughput capability is 369 Mpps (wire speed).

Product Review

The Juniper EX4300-48T-AFI offers a high packet switching capacity of 248 Gbps unidirectional/496 Gbps bidirectional, ensuring efficient data handling across its 48 10/100/1000BASE-T ports and up to four 40GbE ports. With a 320 Gbps Virtual Chassis interconnect, it supports the combination of up to 10 units as a single logical device, enhancing scalability and simplifying management. However, its maximum operating temperature of 113° F may limit deployment in high-temperature environments, potentially affecting its performance and reliability in certain scenarios.


The Juniper EX4300-48T-AFI is a network switch designed for high-performance computing environments, offering exceptional speed, reliability, and scalability. This device is equipped with 48 10/100/1000BASE-T ports, providing a solid foundation for high-speed networking and efficient data transfer across a range of operational conditions. One of the standout features of the EX4300-48T-AFI is its power supply, rated at 350 W AC with back-to-front airflow, ensuring efficient cooling and stable performance even under heavy loads. The switch supports up to four 40GbE ports through an optional module, expanding its connectivity options for high-demand applications. The hardware specifications are designed to support a high degree of scalability and integration. With a 320 Gbps Virtual Chassis interconnect capacity, it enables up to 10 units to be combined, functioning as a single logical device. This feature simplifies network management and increases operational efficiency by providing centralized control over multiple switches. Key hardware highlights include:
  • Packet Switching Capacities: 248 Gbps (unidirectional)/496 Gbps (bidirectional), ensuring rapid data handling and transfer capabilities.
  • GbE Port Density per System: 56, which includes 48 host ports plus four 40GbE ports and an optional four-port 1/10GbE uplink module, offering extensive connectivity options.
  • Throughput (Mpps): 369 Mpps (wire speed), delivering fast data processing speed to meet the requirements of intensive computing tasks.
The dimensions of the base unit are 17.36 x 1.72 x 16.38 inches, with the overall dimensions slightly increasing when the power supply and front module are installed. Despite its expansive capabilities, the system maintains a compact and efficient design, suitable for environments where space is at a premium. The system weight stands at 2.4 lb, with an additional 0.33 lb for the fan module. It features two field-replaceable fans, with the PSU providing an airflow of 7.5 cubic feet per minute, ensuring that the system remains cool and operational even under strenuous conditions. Operating conditions are also taken into consideration, with the device functioning optimally between 32° F and 113° F. It can be stored in temperatures ranging from -40° F to 158° F, and operates effectively at altitudes up to 10,000 ft, with non-operating altitudes reaching up to 16,000 ft. The system's relative humidity non-operating range is 0% to 95% (noncondensing), highlighting its resilience in various environmental conditions. In summary, the Juniper EX4300-48T-AFI is a powerful and adaptable network switch that offers a compelling blend of performance, scalability, and reliability for businesses and network operators. Its comprehensive set of features and specifications make it a suitable choice for organizations looking to enhance their network infrastructure with a device that can efficiently handle high volumes of data traffic.


Part Number EX4300-48T-AFI
Manufacturer Juniper
Port Configuration 48 x 10/100/1000BASE-T Ethernet ports
40GbE Port Availability Up to 4 with expansion module
Power Supply Capacity 350 W AC Power Supply
Cooling Direction Back-to-Front Airflow (AFO)
Virtual Chassis Connectivity 320 Gbps backplane for up to 10 linked devices
Dimensions (Device) 44.1 x 4.37 x 41.6 cm
Dimensions (with Power Supply) 44.1 x 4.37 x 44.47 cm
Dimensions (Full Configuration) 44.1 x 4.37 x 45.73 cm
Device Weight 1.1 kg
Fan Module Weight 0.15 kg
Number of Fans 2, field-replaceable
Fan Airflow 7.5 cubic feet per minute
Switching Capacity Up to 496 Gbps (full duplex)
Port Density 56 (48 base ports + 8 expansion ports)
Throughput 369 Mpps
Minimum Operating Temperature 0° C
Maximum Operating Temperature 45° C
Minimum Storage Temperature -40° C
Maximum Storage Temperature 70° C
Max Operational Altitude 3,049 meters
Max Non-operational Altitude 4,877 meters
Non-operating Humidity 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