Juniper launched the EX3400 alongside the EX2300, and both start at Junos 15.1X53-D50. The 24T is the copper version without PoE. What sets it apart is the uplinks. You get four SFP+ ports on the front and two 40G QSFP+ ports on the back, which are Virtual Chassis ports out of the box and stack up to 10 switches. It also has hot-swappable fan modules and a second power supply slot, though Juniper ships it with one supply and a blank cover. MACsec is supported with its own license. For JNCIA and JNCIS study it's a roomier lab switch than an EX2300, with 40G stacking and room for redundant power. Routing still needs licenses, OSPF with an EFL or Flex Advanced and BGP with Flex Premium. Juniper hasn't announced end of life for it, so it still gets current Junos.
Lab check
Should come with it
Check the listing photos against this list, and ask the seller about anything you can’t see. A missing piece should come off the price.
Juniper's guide says a failed fan raises an alarm and the others speed up, and the fan modules and supplies are hot-swappable, so a bad one is a part swap. With only one supply fitted you have to power the switch off before pulling it.
Buying your first used switch or router? How to check used network gear covers the console, a factory reset, power supplies and optics, and our noise and power guide covers what fans and power draw mean at home.
Buying guide
We'd buy juluplus's EX3400-24T with its power cord at $175 with free shipping, about half what the next US seller asks. This is a thin used market, with at least 29 for sale but only a handful of US used ones at $175 to $500 delivered, so the $575 to $1,150 band is mostly new dealer stock, -DC units and European resellers adding $167 to $201 shipping. Read the label for EX3400-24T, since the -DC version needs a -48 V DC supply rather than mains, and ask for show chassis hardware listing the supply and both fan modules; expect one supply, a blank cover and no optics or QSFP+ cables. Juniper hasn't announced end of life, so it still gets current Junos, but OSPF needs an EFL or Flex Advanced license and BGP needs Premium, all tied to the serial, so check show system license. Skip moak24's listing, which shares its title with two other sellers and its photo with one of them.
$174.99delivered
The lowest delivered EX3400-24T by a long way, titled with its power cord, with free shipping from a 99.2% seller, and the photo shows a real unit. There's no test claim, so ask for show chassis hardware and show chassis alarms before you buy.
Juniper Networks EX3400-24T 24-Port Ethernet Switch w/Power Cord
Delivered prices include shipping as eBay quoted it to a US address on Oct 15, 2026. Many sellers charge by distance, so your total may differ. eBay shows yours before you pay.
Snapshot
Checked . Some may have sold.
Delivered prices include shipping as eBay quoted it to a US address on Oct 15, 2026. Many sellers charge by distance, so your total may differ. eBay shows yours before you pay.
Used$174.99delivered
$174.99 · free shipping
Buy It Now$174.99
Good buy
Titled with power cord. No test claim. Free shipping.
Seller: juluplus
99.2% positive
Used$348.00est. delivered
$249.00 + $99.00 shipping
Buy It Now$249.00
This seller takes offers, and many sellers accept less than the asking price.
Fine if you might miss it? Send an offer first. Someone else can still buy it while you wait for a reply.
Want it for sure? Use Buy It Now.
Our take
Ships from Israel with $99 shipping. Titled 4x SFP, but the uplinks take SFP+ too.
Seller: katiil3
100% positive
Used$363.04est. delivered
$349.00 + $14.04 shipping
Buy It Now$349.00
This seller takes offers, and many sellers accept less than the asking price.
Fine if you might miss it? Send an offer first. Someone else can still buy it while you wait for a reply.
Want it for sure? Use Buy It Now.
Our take
Photo shows a real unit on a rack shelf. No test claim.
Seller: kona123
100% positive
Refurbished$499.99delivered
$499.99 · free shipping
Buy It Now$499.99
This seller takes offers, and many sellers accept less than the asking price.
Fine if you might miss it? Send an offer first. Someone else can still buy it while you wait for a reply.
Want it for sure? Use Buy It Now.
Our take
Refurbished card. Photo shows a power cord and console cable. Free shipping.
Seller: netyorker
99.9% positive
Refurbished$624.80est. delivered
$423.97 + $200.83 shipping
Buy It Now$423.97
This seller takes offers, and many sellers accept less than the asking price.
Fine if you might miss it? Send an offer first. Someone else can still buy it while you wait for a reply.
Want it for sure? Use Buy It Now.
Priced high
VAT-inclusive refurbished listing from Austria with $200.83 shipping.
Seller: minutio
100% positive
Open box$683.50delivered
$683.50 · free shipping
Buy It Now$683.50
Check the seller
Same title as two other sellers and the same product photo as one. Open-box card.
Seller: moak24
98.8% positive
Used$724.09est. delivered
$556.73 + $167.36 shipping
Buy It Now$556.73
This seller takes offers, and many sellers accept less than the asking price.
Fine if you might miss it? Send an offer first. Someone else can still buy it while you wait for a reply.
Want it for sure? Use Buy It Now.
Priced high
VAT-inclusive used listing from a German reseller with $167.36 shipping. The photo is a product render.
Seller: it-planet-com
99.4% positive
New$2,550.00delivered
$2,550.00 · free shipping
Buy It Now$2,550.00
This seller takes offers, and many sellers accept less than the asking price.
Fine if you might miss it? Send an offer first. Someone else can still buy it while you wait for a reply.
Want it for sure? Use Buy It Now.
Priced high
Titled brand new, and it's the -DC version, which needs a -48 V DC supply. About three and a half times the band median.
Seller: ra79951
98.9% positive
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