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EX4300-48T-AFI Juniper Switch, Back-to-Front, Refurbished, 48x 1GbE RJ45 and 4x 40GbE QSFP+

EX4300-48T-AFI Juniper Switch, Back-to-Front, Refurbished, 48x 1GbE RJ45 and 4x 40GbE QSFP+

Condition
Refurbished, tested & guaranteed
WARRANTY & RETURNS
EX4300-48T-AFI has a 3-year warranty and a 30-day return policy. DOA units are replaced or refunded. Full terms are on the warranty page and the refund policy.
Availability
In stock

$235

Free US ground shipping

Orders placed by 12pm ship the same day.

Request a quote415-626-4231

A firm price comes back, typically the same business day. Prefer a PO or wire? We take those too. Just ask.

The Juniper EX4300-48T-AFI is a switch from the Juniper EX4300 family with 48 ports of 1GbE RJ45, 4 ports of 40GbE QSFP+, back-to-front airflow and AC power. It runs Junos OS. This unit is refurbished (used): inspected, powered on and functionally tested by Townsend Networks technicians before listing. One switch per order, with a rack-mount kit and the power cable(s) to match.

Other versions

  • EX4300-48T

    Refurbished, tested & guaranteedAirflow: Front-to-backIn stock

    $145
  • EX4300-48T-DC

    Used, tested & guaranteedAirflow: Front-to-backIn stock

    $810
Compatible with
AIR IN (AFI) parts only: the fan modules and the 350 W AC power supply, each labeled AIR IN. Juniper marks AFI as back-to-front and AFO as front-to-back, so AFO supplies and fans do not match this chassis.
HOW IT DIFFERS
EX4300-48T-AFI is the back-to-front version of the 48 port EX4300: Juniper's data sheet lists it with a 350 W AC supply and AFI airflow, and the system overview says its two fan modules and its supply carry the AIR IN label. Its sisters EX4300-48T and EX4300-48T-DC both move air front-to-back (AFO), the DC one on a 550 W DC supply. Rated acoustic noise is 38.9 for this model against 37.8 for EX4300-48T.
Model
EX4300-48T-AFI
Network Ports
48 × 1GbE
Connectors
RJ45, QSFP+
Type
Switch
Condition
Refurbished, tested & guaranteed

Technical details

BrandJuniper
FamilyEX4300
Uplinks4x 40GbE QSFP+
Total ports52
Fastest port40GbE
PoENon-PoE
Operating systemJunos OS
Rack units1U
AirflowBack-to-front (AFI)
Power inputAC
Throughput496 Gbps switching capacity, 369 Mpps forwarding

Juniper datasheet

Testing process

End of sale and support

ModelAnnouncedEnd of saleEnd of supportNotice
Juniper EX4300 (24P, 24T, 48P, 48T)Juniper notice

Questions about the Juniper EX4300 family

What ports does the EX4300-48T-AFI have?
The EX4300-48T-AFI has 48 × 1GbE, with uplinks of 4x 40GbE QSFP+ and 52 data ports in all.
What is the throughput of the EX4300-48T-AFI?
The EX4300-48T-AFI has a throughput of 496 Gbps switching capacity, 369 Mpps forwarding.
Which way does the air flow on the EX4300-48T-AFI?
The airflow of the EX4300-48T-AFI is back-to-front (AFI).
What power does the EX4300-48T-AFI use?
The EX4300-48T-AFI uses AC.
How much rack space does the EX4300-48T-AFI take?
The EX4300-48T-AFI takes 1U of rack space.
What software does the EX4300-48T-AFI run?
The EX4300-48T-AFI runs Junos OS.
Is the Juniper EX4300 end of life?
Juniper's EX Series hardware milestones page shows three notices for the models on this page. The 24- and 48-port T and P models, including the AFI, DC and TAA versions: end of life announced 24 June 2022, last order 31 March 2024, end of support 31 March 2029. The EX4300-32F and EX4300-32F-DC (TSB105633): last order 31 March 2026, end of support 31 March 2029. The EX4300-48MP (TSB109284, announced 29 June 2026): last order 29 December 2026, end of support 29 December 2031.
What do AFI and AFO mean on an EX4300?
Airflow direction. Juniper labels fans and power supplies AIR IN (AFI) for back-to-front airflow and AIR OUT (AFO) for front-to-back airflow. The EX4300-48T-AFI ships with AFI fan modules and power supply; the standard EX4300-48T ships AFO. Match the airflow to the hot and cold aisles of the rack it goes into.
Can EX4300 switches be stacked, and with what?
Up to 10 EX4300 switches form a Virtual Chassis. The built-in QSFP+ ports are set up as Virtual Chassis ports by default and can be reconfigured as network ports. An EX4300 can also be a line card member of a mixed Virtual Chassis with EX4600 switches, where the EX4600 takes the primary and backup roles.
Which uplink modules fit the EX4300?
The 24- and 48-port T and P models take the 4-port 10GbE SFP+ module EX-UM-4X4SFP. The EX4300-32F takes the 2-port 40GbE QSFP+ module EX-UM-2QSFP or the 8-port 10GbE SFP+ module EX-UM-8X8SFP. The EX4300-48MP takes the EX-UM-2QSFP-MR (two 40GbE or 100GbE ports) or the EX-UM-4SFPP-MR (four 1GbE or 10GbE ports). A switch listing does not include an uplink module unless it says so.
What condition and warranty come with a Juniper EX4300 switch from Townsend?
Each listing prints its own condition. Units sold as new, refurbished or used are bench tested before they are listed: every port and module slot is checked and the previous owner's configuration is erased. They are covered by the Townsend warranty from the date of delivery; if the hardware fails in normal use we repair it or replace it with a tested unit, and the length and terms are on our warranty page. Unused hardware can be returned within 30 days of delivery. Juniper software licences and support contracts are not part of our warranty.

Juniper EX4300-48T-AFI / EX4300 Series Switch, 48x 10/100/1000BASE-T Ports (non-PoE) + 4x 40GbE QSFP+ Uplinks, 350W AC PSU, Back-to-Front Airflow (Air In)

WHAT'S INCLUDED

One (1) Juniper EX4300-48T-AFI. Includes a rack-mount kit and the power cable(s) to match the switch.

CONDITION & TESTING

Condition: Refurbished, Tested & Guaranteed EX4300-48T-AFI was tested by Townsend Networks technicians before listing. The test process is on the testing process.

Selling your Juniper EX4300-48T-AFI? We buy used network gear.

Questions about the EX4300-48T-AFI? Call 415-626-4231 or email sales@townsendnetworks.com.

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