StarTech.com StarView SV1632DS - Manual (Page 6)

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Figure 1: A single StarView configuration
Cascade (Master/Slave) Configuration
You can connect a second level of one or more StarViews to “PC
1”~”PC 4” (SV431) or "PC 1"~”PC 8” ports (SV831 & SV1631) of a
Master unit. Cascade configuration expands system ability allowing
you to select computers connected to the Master or Slaves. There
is only one Master, which has a mouse, a keyboard and a monitor
connected to its CONSOLE port directly operated by a user.
Once connected, StarViews automatically configure themselves to
either Master or Slave. Slaves of different StarView models can be
mixed in cascade configuration. [NOTE: Master must have equal or
more PC ports than that of Slaves, i.e., if SV831 is a master, SV831
and SV431 can be Slaves, but SV1631 can not.]