'different needs'

40G QSFP+ to 4x 10G SFP+ direct attach passive copper cable are suitable for very short distances and offer a highly cost-effective way to establish a 40-Gigabit link between QSFP+ and SFP+ equipment connections. These cables are used for 40GbE and Infniband standards, to maximize performance. QSFP+ are designed to meet emerging data center and high performance computing application needs for a high density cabling interconnect system capable of delivering an aggregate data bandwidth of 40Gb/s.

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Fibre Optic Coupler is a device that connects two optical cables together. Fibre Optic Coupler comes in different versions depending on the number of connectors. Some have a single connector (simplex type), others two (duplex), and even others have four connectors (quad type).

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