HP LD4220tm and LD4720tm Digital Signage Touch Displays

Each display must be connected to every other display, using either RGB IN/RGB OUT or DP IN/DP
OUT as shown in the following figure. If you want to issue display commands from the media player/
computer, you must connect each display with RS-232-C IN/RS-232-C OUT just like the video
connections.
Figure 4-1 Tile Mode 3x3 video wall—Connecting displays with DP IN/DP OUT
Display In
Display Out
Display In
Display Out
Display In
Display Out
Display In
Display Out
Display In
Display Out
Display In
Display Out
Display In
Display Out
Display In
Display Out
Display In
Display Out
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40 Chapter 4 Operating the display ENWW