Black Box IC1001A User Manual
24
USB DIRECTORS RS-232
2. Allows you to configure how COM ports will be
assigned.
The driver supports COM-port number assignment in
two ways:
1. Assigning COM ports based on units’ serial
numbers. This is the default setting. In this mode,
the driver uses the serial number of each unit to
uniquely identify it, and the COM-port
assignments for a given unit are based on its serial
number. No matter which physical USB port a unit
is plugged into, it will maintain its assigned COM-
port numbers.
the driver uses the serial number of each unit to
uniquely identify it, and the COM-port
assignments for a given unit are based on its serial
number. No matter which physical USB port a unit
is plugged into, it will maintain its assigned COM-
port numbers.
2. Assigning COM ports based on physical USB port.
In this mode, the driver identifies a unit based on
the physical USB port it is plugged into. This
effectively assigns COM-port numbers to physical
USB ports. No matter which unit is plugged into a
given USB port, it will use the COM-port numbers
assigned to that USB port. This permits one unit
to be replaced with another, and, although the new
unit has a different serial number, it will receive the
same COM port assignments as the old unit because
they were both plugged into the same USB port.
the physical USB port it is plugged into. This
effectively assigns COM-port numbers to physical
USB ports. No matter which unit is plugged into a
given USB port, it will use the COM-port numbers
assigned to that USB port. This permits one unit
to be replaced with another, and, although the new
unit has a different serial number, it will receive the
same COM port assignments as the old unit because
they were both plugged into the same USB port.