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40gbase Qsfp 40g Er4 40km 1270~1330nm Lc Cwdm4+ Apd Sfp Transceiver - Fiber Optic Equipment - AliExpress
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407-AAXH - Dell Compatible 5m 40G QSFP+ to 4x10G SFP+ Passive Direct Attach Copper Breakout Cable - GBICS.com
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Cisco QSFP-4X10G-AOC15M Compatible 40G QSFP+ to (x4) 10G SFP+ Active Optical Cable - 15 Meters in Total Length | Fibertronics, Inc.
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