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What is a Direct Attach Copper (DAC) Cable?

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If you are not familiar with Direct Attach Copper (DAC) cables, then you should be. We have a quick guide explaining the basics

Differences Behind 100GBASE-SR4 and 100GBASE-LR4 Optics

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We discuss 100GBASE-SR4 versus 100GBASE-LR4 differences and also why you may want to look at 100GBASE-CWDM4 as well

HPE 620QSFP28 4x 25GbE Single QSFP28 Port Ethernet Adapter Review

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In our HPE 620QSFP28 review we see what this unique 4x 25GbE single QSFP28 port low profile Ethernet adapter offers and some of the challenges