StarTech.com STHDBTRX - Manual (Page 18)

Instruction Manual
15
a) Each output port is represented by the number above each of the button groups.
Use the group of buttons that correspond with the numbered output display you
wish to change.
b) Press the number of the input source number (that corresponds with the numbered
input device) you wish to be displayed on that specific numbered output port.
or
Press the left or right arrow buttons to toggle between input sources numerically.