Nortel Networks BayStack 400-ST1 Cascade Module

No cable included
For Bay Networks BayStack 450 switches that are configured with BayStack 450 software version V1.1.0 or later.

The front-panel components of the BayStack 400-ST1 Cascade Module consists of Two blank connectors (unused), One Cascade A Out SCSI connector, One Unit Select switch, One Cascade A In SCSI connector

Cascade A Out Connector: The Cascade A SCSI out provides an attachment point for connecting this unit to another unit via the cascade cable. A return cable from another unit's Cascade A Out connector to this unit's Cascade A In SCSI connector completes the stack connection

The Unit Select switch: (up = Base) determines the base unit for the stack configuration