Keep 40 GbE infrastructure efficient with a direct-attach copper cable built for short-reach connectivity. The AddOn Networks X6559-R6-AO compatible assembly provides a QSFP+ to QSFP+ path that eliminates the need for separate transceivers and fiber when the link stays within the rack or between nearby racks. For procurement teams and infrastructure owners, TAA compliance adds a clear advantage in regulated environments. For operations teams, the direct-attach design keeps deployment straightforward and reduces the number of parts that must be stocked, tracked, and installed. That makes it a strong fit for top-of-rack switching, storage connectivity, and server uplinks where consistency matters. This cable is a sensible choice when you want to preserve 40 GbE performance without paying for optical reach you do not need. It supports a cleaner bill of materials, faster turn-up, and a more controlled cabling layout in dense data center environments. If your deployment is built around NetApp-compatible hardware and short copper runs, this model delivers the right balance of compliance, simplicity, and speed.