Simplex vs. Duplex Fiber: Which Link Type Performs Better?
July 22, 2026
Compare simplex vs. duplex fiber, understand BiDi compatibility, pricing, use cases, and installation tradeoffs to choose the right fiber link.
QSFP vs QSFP+: Decoding the Evolution of 40G Modules
May 29, 2026
Confused about QSFP vs QSFP+? Dive into our guide on 40G optical module evolution, architectural differences, media connectivity, and real-world deployment.
QSFP Speed: Signal Integrity in 200G/400G PAM4 Links
May 29, 2026
Maximize QSFP Speed in 200G/400G PAM4 links. Learn to master signal integrity, manage insertion loss, mitigate crosstalk, and optimize thermal management.
Cisco QSFP 40G Alternative: Purchasing Specifications
March 17, 2026
Learn how to choose the right Cisco QSFP 40G compatible alternative with key specs, compatibility tips, and buying guidance for 40G networks.
How to Choose QSFP Modules: 40G, 100G & QSFP-DD Guide
December 22, 2025
Learn how to choose QSFP modules for 40G, 100G, QSFP28, QSFP56, and 400G QSFP‑DD networks. Compare speed, distance, fiber type, compatibility, and LINK‑PP products.
QSFP module 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 -
NVIDIA/Mellanox QSFP-BIDI-100G Compatible LINK-PP 100G QSFP28 SWDM4 150m DOM Duplex LC MMF Optical Transceiver Module $ 316.80 ~ 360.00
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