“1” = Port2 (HDMI port specification)
"2" = port3 * VG-882,883, 876
"3" = port4 * VG-882,883, 876
Below is for VG-876
"4" = port5, "5" = port6, "6" = port7
"7" = port8, "8" = port9, "9" = port10
"10" = port11, "11" = port12, "12" = port13
"13" = port14, "14" = port15, "15" = port16
Fig. 2-55-2