The new high density (HD) MPO cassette from Sumitomo Electric Lightwave brings innovative features to the highest capacity format cassette available. Made from anodized aluminum, the cassette is very light and durable with a shortened depth to fit into the tightest of spaces. The front of the cassette features dual-door shuttered adapters which protect the installed connectors for even the most severe dusty conditions. The MPO adapter in the rear of the cassette features a polarity changing design allowing the cassette to reverse the fiber routing from MPO to LC with a simple key-flip of the adapter (MM-only due to flat polish angle). The HD cassette can be installed and removed from the front of the panel with a squeeze to the release tabs. For retrofit applications to LGX formats, the HD cassette is available with conversion brackets to achieve 24 LC connectors in a single LGX opening.