Tripp Lite's N484-12SFP-K is a High Density SFP+ 10GbE Pass-through cassette, which includes six 2.5M QSFP+ to 4xSFP+ breakout cables, and is used with Tripp Lite's N484-01U chassis. Designed for use in data centers with networking switches in adjacent racks, it is an innovative, all-in-one solution that allows you to create distributed redundancy between your 40GbE equipment, without the need for transceivers, fiber optic cabling, and fiber breakout / shuffling equipment. Not only does this result in a cleaner installation than existing methods for creating distributed redundancy, it results in lower power consumption, less heat, reduced latency, and is more cost efficient. Simply connect the QSFP+ connectors on three of the included breakout cables to QSFP+ ports on your primary core switches, and the SFP+ connectors to the ports on the cassette. The QSFP+ connectors on the remaining breakout cables then connect to secondary switches on the other side, with the SFP+ connectors being distributed amongst the cassette's ports so that the secondary switches are getting their network connectivity from multiple upstream core switches / ports, instead of relying on one switch / port to provide all of the connectivity. You can further expand the redundancy in your installation by adding up to 4 cassettes to a single N484-01U chassis. Cassette housing made with heavy duty, 1.0mm Cold Rolled Steel.