400G SR4.2 vs. Other 400G Optics: Key Differences
LINK-PP Official Store
·
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 SR4.2 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 ~ 1,375.004.8 ★ 13 Reviews | 161 Sold -
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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 ~ 1,375.005 ★ 15 Reviews | 128 Sold -
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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 ~ 1,375.004.8 ★ 12 Reviews | 130 Sold -
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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 ~ 1,375.004.9 ★ 11 Reviews | 167 Sold -
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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 ~ 1,375.004.9 ★ 13 Reviews | 159 Sold -
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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 ~ 1,375.005 ★ 15 Reviews | 119 Sold -
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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 ~ 1,375.004.9 ★ 14 Reviews | 135 Sold -
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LINK-PP LQD-BM85400-SR4C 400GBASE-SR4.2 QSFP-DD BiDi 850/910nm 150m MPO-12/UPC MMF Transceiver Module $ 1,210.00 ~ 1,375.004.9 ★ 20 Reviews | 139 Sold -
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FS QDD-SR4-400G Compatible 400GBASE-SR4 QSFP-DD 8 x 50G PAM4 850nm 50m DOM MPO-12/APC MMF Optical Transceiver Module $ 618.64 ~ 703.004.9 ★ 17 Reviews | 822 Sold -
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HPE Aruba QDD-SR4-400G Compatible 400GBASE-SR4 QSFP-DD 8 x 50G PAM4 850nm 50m DOM MPO-12/APC MMF Optical Transceiver Module $ 618.64 ~ 703.004.9 ★ 16 Reviews | 719 Sold
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