400G QSFP56-DD: Scaling High-Density Data Center Connectivity
May 19, 2026
Master the 400G QSFP56-DD standard. Learn about Double Density architecture, PAM4 modulation, backward compatibility, and thermal management for data centers.
Arista QDD-400G-DR4: Reliable Third-Party Alternates
May 18, 2026
Discover Arista QDD-400G-DR4 specs, third-party alternates, and the key compatibility checks for breakout, reach, connectors, and vendor support.
AI Cluster Networking: Architecture, RDMA, and Optics Guide
May 08, 2026
AI cluster networking for GPU workloads, comparing InfiniBand, RoCE, Ethernet, and optical modules for scale, latency, and cost.
Cisco QDD-400G-ZRP-S Alternative Selection Guide
May 08, 2026
Explore Cisco QDD-400G-ZRP-S alternative selection strategies, compatibility factors, performance comparisons, and sourcing considerations.
400G ZR+ Modules: Selecting Long-Haul Coherent Solutions
April 29, 2026
Learn what 400G ZR+ modules are, how ZR+ differs from ZR, and how to choose the right long-haul coherent optics for real deployments.
400G ZR/ZR+ Optics Guide for High-Speed Optical Networks
April 28, 2026
Discover what 400G ZR and 400G ZR+ optics are, their key differences, real deployment reach, standard compatibility, and how to choose the right coherent module.
QSFP-DD 400G Test Solution: BER Monitoring and Link Quality
April 27, 2026
Learn how QSFP-DD 400G test solutions monitor BER, verify link quality, and troubleshoot 400G links for reliable deployment, testing, and optimization.
400G-SR8 Transceiver: Decoding 16-Fiber Parallel Architecture
April 27, 2026
Understand the 400G-SR8 transceiver, including architecture, multimode design, reach limits, breakout options, and data center applications.
400G SR4.2 vs. Other 400G Optics: Key Differences
April 25, 2026
Explore what 400G SR4.2 is, how it compares with SR4, SR8, DACs, and AOCs, and how to choose the right short-reach optic for your network.
400G DWDM Optics: A Complete Guide to Coherent Ethernet
April 25, 2026
Explore what 400G DWDM optics are, how they work, key reach options, 400ZR vs OpenZR+, and how to choose the right solution for DCI and metro networks.
QSFP 100G DR Solutions: Single-Lambda 100G Paths
April 25, 2026
Learn how QSFP 100G DR solutions support single-lambda 100G paths, offering cost-effective, high-performance solutions for enterprise networks.
QSFP112 vs QSFP-DD: Key Differences in 400G Optics
April 22, 2026
Compare QSFP112 vs QSFP-DD in 400G optics, including architecture, performance, compatibility, and deployment considerations for modern networks.
QSFP-DD Products
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NVIDIA/Mellanox QDD-SR4.2-400G Compatible LINK-PP 400GBASE-SR4.2 QSFP-DD BiDi 850/910nm 150m MPO-12/UPC MMF Transceiver Module $ 1,210.00 ~ 1,375.00 -
Juniper QDD-400G-SR4P2 Compatible LINK-PP 400GBASE-SR4.2 QSFP-DD BiDi 850/910nm 150m MPO-12/UPC MMF Transceiver Module $ 1,210.00 ~ 1,375.00 -
Generic QDD-SR4.2-400G Compatible LINK-PP 400GBASE-SR4.2 QSFP-DD BiDi 850/910nm 150m MPO-12/UPC MMF Transceiver Module $ 1,210.00 ~ 1,375.00 -
FS QDD-SR4.2-400G Compatible LINK-PP 400GBASE-SR4.2 QSFP-DD BiDi 850/910nm 150m MPO-12/UPC MMF Transceiver Module $ 1,210.00 ~ 1,375.00 -
Dell QDD-SR4.2-400G Compatible LINK-PP 400GBASE-SR4.2 QSFP-DD BiDi 850/910nm 150m MPO-12/UPC MMF Transceiver Module $ 1,210.00 ~ 1,375.00 -
Cisco QDD-400G-SR4.2-BD Compatible LINK-PP 400GBASE-SR4.2 QSFP-DD BiDi 850/910nm 150m MPO-12/UPC MMF Transceiver Module $ 1,210.00 ~ 1,375.00 -
Arista QDD-400G-SRBD Compatible LINK-PP 400GBASE-SR4.2 QSFP-DD BiDi 850/910nm 150m MPO-12/UPC MMF Transceiver Module $ 1,210.00 ~ 1,375.00 -
Cisco QDD-400G-LR4-S Compatible 400GBASE-LR4 QSFP-DD 1310nm 10km DOM Duplex LC SMF Optical Transceiver Module $ 738.74 ~ 859.00 -
LINK-PP LQD-CW400-LR4C 400GBASE-LR4 QSFP-DD 1310nm 10km DOM Duplex LC SMF Optical Transceiver Module $ 738.74 ~ 859.00 -
LP21GC010B3 QSFP-DD 2x1 Cage With Heat Sink EMI Spring Finger $ 31.36 ~ 39.20
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