The KVM supports cascading, which allows administrators to connect secondary KVM units to a primary KVM. Cascading allows administrators to increase the number of managed devices to up to 1024 servers with a centralized configuration and access interface.A maximum of 32 secondary KVM devices can be cascaded from the primary KVM extending the number of KVM ports to a maximum of 512 for two-user configuration (i.e. two connections to each cascaded device), or 1024 for a one-user configuration.As depicted in the following figure, the KVM supports one level of cascading: The primary KVM controls the secondary level of KVM units connected to it. A secondary KVM unit can be a KVM, a KVM Expander, a KVM/net, or a KVM/netPlus.Administrators can connect up to 32 KVM units to the master KVM. Each cascaded KVM device has two management ports that can be connected to the primary KVM.