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EX3400-48T Juniper Switch, Front-to-Back, Refurbished, 48x 1GbE RJ45 and 2x 40GbE QSFP+

EX3400-48T Juniper Switch, Front-to-Back, Refurbished, 48x 1GbE RJ45 and 2x 40GbE QSFP+

Condition
Refurbished, tested & guaranteed
WARRANTY & RETURNS
EX3400-48T 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

$245

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 EX3400-48T is a switch from the Juniper EX3400 family with 48 ports of 1GbE RJ45, 2 ports of 40GbE QSFP+, front-to-back airflow and AC power. It has 54 ports in all. 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

  • EX3400-48T-TAA

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

    $1,470
HOW IT DIFFERS
EX3400-48T is the 48-port non-PoE EX3400: 48 Gigabit Ethernet access ports on the JPSU-150-AC-AFO supply with front-to-back airflow. Juniper lists a back-to-front version as EX3400-48T-AFI with the JPSU-150-AC-AFI supply. Its sister EX3400-24T has 24 ports on the same 150 W supply, and the EX3400-48P adds PoE to all 48 ports with a 920 W supply.
Model
EX3400-48T
Network Ports
48 × 1GbE
Connectors
RJ45, SFP+, QSFP+
Type
Switch
Condition
Refurbished, tested & guaranteed

Technical details

BrandJuniper
FamilyEX3400
Uplinks2x 40GbE QSFP+, 4x 10GbE SFP+
Total ports54
Fastest port40GbE
PoENon-PoE
Operating systemJunos OS
Rack units1U
AirflowFront-to-back
Power inputAC
Throughput168 Gbps unidirectional / 336 Gbps bidirectional
Dimensions17.36 x 1.72 x 13.78 in (44.1 x 4.37 x 35 cm), base unit, printed W x H x D
Weight10.49 lb (4.76 kg) maximum, no power supply or fan module
Fansredundant fans
Power suppliesAC; 150W rating; 1 AC PSU JPSU-150-AC-AFO included
Power draw (maximum)120 W (input power without PoE)
Operating temperature32° to 113° F (0° to 45° C)
Storage temperature-40° to 158° F (-40° to 70° C)
Operating humidity10% to 85% (noncondensing)
Operating altitudeup to 10,000 ft (3048 m)
Acoustic noise35 DBA
CPUDual Core 1 GHz
Memory (DRAM)2 GB with ECC
Flash storage2 GB
MAC addresses32,000
VLANs4,096
Jumbo frames9216 bytes
Stacking160 Gbps (with QSFP+ ports) or 80 Gbps (with SFP+ ports) Virtual Chassis interconnect

Juniper datasheet

Testing process

What buyers ask

Can the EX3400 be ordered with an additional power supply?
Yes. The switch ships with one power supply preinstalled, additional power supplies are separately orderable, and up to two can be installed.

Questions about the Juniper EX3400 family

What power does the EX3400-48T use?
The EX3400-48T uses AC.
What ports does the EX3400-48T have?
The EX3400-48T has 48 × 1GbE, with uplinks of 2x 40GbE QSFP+, 4x 10GbE SFP+ and 54 data ports in all.
What is the throughput of the EX3400-48T?
The EX3400-48T has a throughput of 168 Gbps unidirectional / 336 Gbps bidirectional.
Which way does the air flow on the EX3400-48T?
The airflow of the EX3400-48T is front-to-back.
How much power does the EX3400-48T draw?
The maximum power draw of the EX3400-48T is 120 W (input power without PoE).
What are the size and weight of the EX3400-48T?
The EX3400-48T measures 17.36 x 1.72 x 13.78 in (44.1 x 4.37 x 35 cm), base unit, printed W x H x D and weighs 10.49 lb (4.76 kg) maximum, no power supply or fan module.
Is the Juniper EX3400 end of life?
Juniper's EX Series hardware dates and milestones page listed no end-of-life notice for the EX3400 switch models as of 7 October 2026. Juniper updates that page when it announces one.
How many EX3400 switches can be stacked?
Up to 10 in one Virtual Chassis, managed as a single device with one IP address. The rear QSFP+ ports are Virtual Chassis ports by default; the front uplink ports can also be set as Virtual Chassis ports with SFP+ transceivers, but not with 1G SFP transceivers.
Can I change the airflow on an EX3400?
The power supplies and fan modules are field replaceable and labelled for airflow out (AFO, front to back) or airflow in (AFI, back to front). The models above ship front to back; Juniper also builds an EX3400-48T-AFI for back-to-front airflow.
What condition and warranty come with a Juniper EX3400 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 EX3400-48T / EX3400 Series Switch, 48x 10/100/1000BASE-T Ports + 4x 1GbE/10GbE SFP+ Uplinks + 2x 40GbE QSFP+ Uplinks, Front-to-Back Airflow (optics sold separately)

WHAT'S INCLUDED

One (1) Juniper EX3400-48T. Includes a rack-mount kit and the power cable(s) to match the switch.

CONDITION & TESTING

Condition: Refurbished, Tested & Guaranteed EX3400-48T was tested by Townsend Networks technicians before listing. The test process is on the testing process.

Selling your Juniper EX3400-48T? We buy used network gear.

Questions about the EX3400-48T? Call 415-626-4231 or email sales@townsendnetworks.com.

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