Arista QSFP-40G-SR4 40G SR4 850nm QSFP+ Transceiver Optic Module
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.
Arista QSFP-40G-SR4 40G SR4 850nm QSFP+ Optical Transceiver
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.
Product Details
- MPN: QSFP-40G-SR4
- Vendor / Brand: Arista
- Product Type: Optics / Optical Transceiver
- 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
- Condition: New
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
Why Buy from WhaleyComm?
At WhaleyComm, every optic we ship is tested to factory specification before it leaves our facility. With over 25 years of experience and more than 5,000 satisfied enterprise customers, we are a trusted source for networking hardware you can depend on.
Lifetime Warranty
No Time Limits. No Questions Asked. Every WhaleyComm unit ships with a Lifetime Warranty. If your Arista QSFP-40G-SR4 fails under normal operating conditions at any point — whether that's 1 year or 20 years from now — we replace it. Simple as that.
Shipping & Returns
- Shipping: Orders ship within 1–2 business days.
- Returns: Contact our support team for any DOA (Dead on Arrival) or warranty-related issues. We make it right, fast.
Order with confidence from WhaleyComm — your enterprise networking partner for life.
