HP LD4220tm and LD4720tm Digital Signage Touch Displays

48. S/W Version (Command: f z)
Check the software version.
Transmission
[f][z][][Set ID][][Data][Cr]
[Data] FFH: Read
Acknowledgement
[z][][Set ID][][OK/NG][Data][x]
49. Input Select (Command: x b)
To select input source for the display.
Transmission
[x][b][][Set ID][][Data][Cr]
[Data] 60H: RGB (PC)
90H: HDMI/DVI (HD-DVD)
A0H: HDMI/DVI (PC)
B0H: DisplayPort (HD-DVD)
C0H: DisplayPort (PC)
Acknowledgement
[b][][Set ID][][OK][Data][x]
[Data] 60H: RGB (PC)
90H: HDMI/DVI (HD-DVD)
A0H: HDMI/DVI (PC)
B0H: DisplayPort (HD-DVD)
C0H: DisplayPort (PC)
90 Appendix C Command reference ENWW