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Silver rectangular rack module front panel with thirty-six QSFP+ port cages in a six-by-six grid

Arista Networks, Inc.

Arista Networks, Inc. DCS-7500E-36Q-LC- 36x 40GbE QSFP+ expansion module

SKU CH-HW4Y-HWYCC MPN DCS-7500E-36Q-LC-

Adds 36 ports of 40 GbE QSFP+ connectivity to an Arista 7500E series chassis

  • Product typeRack
  • 36 ports of 40 GbE QSFP+ density for high-bandwidth uplinks
  • Designed for Arista 7500E series chassis to expand port capacity
  • Fixed module design without hot-swap for simplified mechanical reliability
  • CAT-15959 compliance confirms validated interoperability with 7500E systems
  • Pre-tested with updated firmware to reduce deployment time

36-Port 40GbE QSFP+ Expansion Module

This Arista DCS-7500E-36Q-LC- line card adds thirty-six 40GbE QSFP+ ports to a compatible 7500E series chassis. It targets network operators who need dense 40-gigabit connectivity in a single slot. The module is not hot-swappable, so installation requires a planned maintenance window. Buyers needing hot-plug capability or different port speeds should look elsewhere.

Thermals and Power in Normal Operation

The line card draws power directly from the chassis backplane and relies on the system fan trays for cooling. Acoustic output and thermal load scale with port utilisation and ambient temperature inside the rack. No independent power supply or separate cooling provision is required beyond what the host chassis already provides.

Build Integration and Slot Requirements

The module occupies one line-card slot in an Arista 7500E series chassis identified by CAT-15959. It consumes no external cabling beyond the QSFP+ transceivers and patch cords you choose. The fixed form factor frees adjacent slots for additional line cards or fabric modules, while the lack of hot-swap means the chassis must be powered down or the slot administratively disabled before insertion or removal.

How it compares

Measured against everything we stock in Rack & Tower Servers, at today’s prices. Recalculated every night.

Price $91.99
Cheaper than about 99% of the 17,641 comparable items (median $1,910.99).

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Specifications

Product
Brand nameArista
Model nameDCS-7500E-36Q-LC
Product typeRack

Questions about this item

How is the DCS-7500E-36Q-LC- installed in a 7500E chassis, and what step is often missed?

Power down the 7500E chassis, insert the module into an empty line-card slot, and secure both captive screws; the step often missed is confirming the chassis is fully powered off because this module is not hot-swappable.

What maintenance or replacement will the 36x 40GbE QSFP+ expansion module need later?

The module itself has no user-serviceable parts; plan to replace QSFP+ transceivers or cables if link errors appear, and schedule chassis fan-filter cleaning to maintain airflow over the line card.

What limit appears first when the 36-port 40GbE line card runs sustained traffic?

The aggregate throughput ceiling of 36 ports at 40 GbE each is the first hard limit; chassis fabric and cooling capacity define the practical sustained rate.

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