Key Digital KD-Pro4x1X Operating Instructions Manual page 13

FRONT PANEL
Input Select button
Used to choose which connected source is output to the connected display/device
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Selecting a source with the Input Select button or IR remote will disable Auto Sensing Mode IF Auto
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Sensing has not been set via the front switch.
To factory reset the unit, press and hold for approx. 10 seconds until the front LEDs blink twice
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Output Active LED
Blue LED illuminates solid when Hot Plug Detection (HPD) is received from the connected display/
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output device
Service USB
Micro USB port
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Used for configuration and control from PC via KDMS Pro, KDMS, or third-party control terminal
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Used for firmware updates (consult with Key Digital tech support before updating firmware)
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Supports USB driver for Windows 10, 7, XP, Mac, Linux
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Will register as "Prolific USB-to-Serial Comm Port in Device Manager
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Can be used as RS-232 control port. Baud rate is 57,600.
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