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Arista
Arista QSFP-40G-SR4 40G SR4 850nm QSFP+ Transceiver Optic Module
MPN: QSFP-40G-SR4
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Lifetime
Warranty
ISO 9001
Certified Testing
R2v3
Responsible Refurb
25+
Years
5K+
Customers
ISO
Certified
✓
Tested
Every WhaleyComm unit is professionally tested, reset to factory defaults, and certified by our in-house engineers — the same standard trusted by 5,000+ organisations across 25 years. Not a refurb marketplace. A certified lifecycle partner.
Tested to factory specification. Backed by 25 years of enterprise trust.
The Arista QSFP-40G-SR4 is a high-performance 40 Gigabit QSFP+ optical transceiver designed for short-range multimode fiber applications. Operating at an 850nm wavelength, this SR4 optic delivers reliable, low-latency 40GbE connectivity across four parallel lanes, making it ideal for high-density data center environments, spine-leaf architectures, and enterprise core switching deployments.Available in New condition, this unit has been verified to meet factory specifications and is fully compatible with Arista networking platforms and other standards-compliant 40G QSFP+ infrastructure.
Key Features
40G SR4 parallel optics over OM3/OM4 multimode fiber
850nm VCSEL laser array for reliable short-range transmission
Up to 150m reach on OM4 multimode fiber
Low power consumption optimized for high-density deployments
Hot-pluggable QSFP+ form factor for easy installation
Compatible with Arista 7050, 7060, 7160 series switches and other standards-compliant equipment
Digital Optical Monitoring (DOM) support
RoHS compliant
Technical Specifications
Model / MPN
QSFP-40G-SR4
Brand
Arista
Product Type
Optics
Condition
New
MPN
QSFP-40G-SR4
Vendor / Brand
Arista
Form Factor
QSFP+
Data Rate
40 Gbps (4 x 10Gbps lanes)
Wavelength
850nm
Fiber Type
Multimode (MMF)
Interface
SR4 (Short Range 4-lane)
Connector
MPO/MTP
Ideal Use Cases
High-Speed Inter-Device Links
Optical uplinks between switches, routers, and servers at distance beyond copper.
Data Center Backbone
High-density optical backbone connectivity.
What's Included
✔ Arista QSFP-40G-SR4 New Optical Transceiver (1x)
✔ Protective dust caps installed
✔ WhaleyComm ISO 9001-certified inspection certificate
✔ WhaleyComm Lifetime Warranty
Lifetime Warranty — No Time Limits. No Questions.
Every WhaleyComm unit ships with a Lifetime Warranty. If it fails under normal operating conditions at any point, we replace it. No time limits, no expiration, no hidden conditions. Backed by 25 years and 5,000+ satisfied customers.
Compatibility Details
Review supported optics, cables, software, management protocols, and environment-specific compatibility guidance.
Platform Compatibility
✓
OS: Arista EOS — compatible with Arista CloudVision Portal
✓
Standards: IEEE 802.1Q, 802.3ad, BGP, OSPF, EVPN, VXLAN
Shipping & Returns
Clear fulfilment, tracking, return, warranty, and support information for enterprise hardware orders.
Shipping
Orders ship within 1-2 business days from our facility in Texas. Overnight and expedited shipping available at checkout.
Returns
Contact our support team for any DOA or warranty issues. Every WhaleyComm unit is covered by a Lifetime Warranty — we make it right, fast.
Contact
+1 214 607-4800 | Mon-Fri 8am-6pm CST
Frequently Asked Questions
Product-specific answers about compatibility, testing, warranty, fulfilment, and purchase confidence.
This unit is sold as New and has never been deployed. It ships in original or equivalent packaging with a WhaleyComm Lifetime Warranty.
Yes. Every WhaleyComm unit ships with a Lifetime Warranty — no time limits, no questions asked. If your Arista QSFP-40G-SR4 fails under normal operating conditions at any point, we replace it at no cost.
Every unit goes through an ISO 9001-certified testing process: full power-on diagnostics, port-by-port functionality testing, firmware verification, factory reset, and final inspection. Backed by 25 years and 5,000+ enterprise customers.
Arista QSFP-40G-SR4 40G SR4 850nm QSFP+ Transceiver Optic Module
$65.00
Arista
Arista QSFP-40G-SR4 40G SR4 850nm QSFP+ Transceiver Optic Module
MPN: QSFP-40G-SR4
$65.00
In Stock — Ships Same Day
