Extreme ExtremeSwitching SLX 9140 Switches - Refurbished, Used, New

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The Extreme ExtremeSwitching SLX 9140 is a 1RU data center leaf switch, originally a Brocade design, with 48 SFP28 ports at 25G and six QSFP28 ports at 100G. It runs SLX-OS and is built for top-of-rack server access in a leaf-spine fabric, where the SFP28 ports face the servers and the QSFP28 ports uplink to the spine. All four models on this page share the same ports and differ only in power input (AC or DC) and airflow direction (front-to-back or back-to-front). NetworkTigers sells SLX 9140 switches refurbished, used and new, and every unit is powered up and tested before it ships.

SLX 9140 models by power and airflow

Model	Ports, power and airflow	Shop
BR-SLX-9140-48V-AC-F	48x 25G SFP28, 6x 100G QSFP28, AC power, front-to-back airflow	BR-SLX-9140-48V-AC-F
BR-SLX-9140-48V-AC-R	48x 25G SFP28, 6x 100G QSFP28, AC power, back-to-front (reverse) airflow	BR-SLX-9140-48V-AC-R
BR-SLX-9140-48V-DC-F	48x 25G SFP28, 6x 100G QSFP28, DC power, front-to-back airflow	BR-SLX-9140-48V-DC-F
BR-SLX-9140-48V-DC-R	48x 25G SFP28, 6x 100G QSFP28, DC power, back-to-front (reverse) airflow	BR-SLX-9140-48V-DC-R
All SLX 9140	Every SLX 9140 listing, new and refurbished, both power types and both airflows	BR-SLX-9140
Related Extreme	Other SLX leaf, spine and aggregation switches	SLX 9150 \| SLX 9030 \| SLX 9240 \| All SLX

Which SLX 9140 do I need?

Since the port layout is identical across the four models, the decision comes down to two letters in the part number. The first is power: AC for a standard data center rack, DC for a telco or -48V DC plant. The second is airflow: F models pull air in at the port side and exhaust at the power supply side (front-to-back), and R models run the other way. Match the airflow to your hot aisle and cold aisle layout so the switch does not pull hot exhaust in through its ports. Then plan the uplinks: each QSFP28 port runs at 100G or 40G, and can break out to 4x 25G or 4x 10G with a breakout cable, so a 9140 can also connect to an older 10G or 40G spine. The SFP28 ports accept 25G and 10G optics and DACs, which lets you mix 10G and 25G servers in the same rack. Tell us which power and airflow you run and we will match the unit.

Frequently asked questions

Can I convert an AC SLX 9140 to DC, or change its airflow direction?
The power supplies and fans are field replaceable, but the airflow direction is set by the fan and power supply modules installed, and switching between AC and DC means replacing the power supplies. Buying the correct model for your rack from the start is simpler than converting one.

Is the SLX 9140 only for leaf-spine data centers?
No. It is a dense 25G and 100G Layer 2 and Layer 3 switch, so it also works as an aggregation switch for a campus core or a storage network where many 10G and 25G links need to come together in one rack unit.

NetworkTigers has sold enterprise network equipment since 1996. Every switch carries the NetworkTigers 365-day warranty. Need several for a fabric build? Ask us for a quote.