Description The Dual Speed Hub-PS Hub cascade converter kit provides additional SuperStack II system configuration flexibility. With this optional module, the 10 Mbps SuperStack II PS Hub 40/50s and SuperStack II Dual Speed Hub 500s can be stacked together and managed as a single entity. When stacked together, the 10 Mbps segment on the Dual Speed Hub 500 will be connected to one of the PS Hub 40/50 segments (segment No 1). This feature provides investment protection by allowing you to build 10/100 networks on top of existing 10 Mbps PS Hub 40/50s. It also leverages and simplifies management and monitoring of mixed stacks while saving wiring closet space. This unit comes with one cascade cable.