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NEW
Arista
Arista QDD-400G-SRBD New - 400GBASE-SR4.2 (400G-BIDI), 4x 100GBASE-BIDI and 4x 100GBASE-SR1.2 QSFP-DD Transceiver, MPO-12 UPC
MPN: QDD-400G-SRBD
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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 QDD-400G-SRBD is a high-performance 400 Gigabit Ethernet QSFP-DD (Quad Small Form-factor Pluggable Double Density) optical transceiver designed for short-reach, high-density data center networking. Utilizing 400GBASE-SR4.2 BiDi (Bidirectional) technology, it delivers 400 Gbps connectivity over OM4 or OM5 multimode fiber using an MPO-12 optical connector, supporting transmission distances of up to 100 meters on OM4 and 150 meters on OM5 fiber.The module is software configurable to operate as a native 400GBASE-SR4.2 transceiver or as a breakout solution supporting 4 × 100GBASE-SRBD (100G BiDi) or 4 × 100GBASE-SR1.2 interfaces. This flexibility makes it an excellent choice for organizations migrating from 100G to 400G Ethernet while maximizing existing multimode fiber infrastructure.
Technical Specifications
Type
QSFP-DD / 400GBASE-SR4.2
Brand
Arista
Speed
400 Gigabit Ethernet (400 Gb/s)
Reach
Up to 100 m (OM4), Up to 150 m (OM5)
Fiber
OM4 or OM5 Multimode Fiber (MMF)
Wavelength
850 nm / 910 nm
Connector
MPO-12 (8 active fibers)
Lanes
4 × 100G transmit / receive lanes
Ideal Use Cases
What's Included
✔ Arista QDD-400G-SRBD 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.
✓
Compatible Applications
✓
400G Data Center Switching & Routing
✓
Spine-Leaf Network Architectures
✓
High-Performance Computing (HPC) Interconnects
✓
Top-of-Rack (ToR) Server Connectivity
✓
Cloud & Hyperscale Infrastructure
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 QDD-400G-SRBD 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 QDD-400G-SRBD New - 400GBASE-SR4.2 (400G-BIDI), 4x 100GBASE-BIDI and 4x 100GBASE-SR1.2 QSFP-DD Transceiver, MPO-12 UPC
$135.00
Arista
Arista QDD-400G-SRBD New - 400GBASE-SR4.2 (400G-BIDI), 4x 100GBASE-BIDI and 4x 100GBASE-SR1.2 QSFP-DD Transceiver, MPO-12 UPC
MPN: QDD-400G-SRBD
$135.00
In Stock — Ships Same Day
