StarTech.com STHDBTRX - Manual (Page 26)

Instruction Manual
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6. The IR Matrix Field on the bottom left displays which IR output device is currently
available for remote control at each output port.
Note: The Refresh button will reload the page showing your current configuration.
7. You can change the IR Input location for each IR output port using the IR output
field on the bottom right side. Each IR Output port has a section with numbered
buttons representing each of the IR input locations. Click the number that
represents the output port for your desired change.