HP LD4220tm and LD4720tm Digital Signage Touch Displays

Display ports
Figure 3-19 Display ports
Component Function
1 Power cord receptacle Power cord receptacle to connect the display to an electrical outlet.
2 RS-232-C (Control) serial
ports
RS-232-C (Control) serial ports connect to RS-232 devices.
3 HDMI/DVI, RGB IN, and RGB
OUT
HDMI supports High Definition (HD) input and HDCP (High-bandwidth Digital
Content Protection). Some devices require HDCP in order to display HD signals.
DVI input is supported with an HDMI to DVI signal cable (not included). RGB IN
supports analog VGA connections from PCs. RGB OUT supports cloning
connections with VGA cables from display to display.
4 AUDIO (RGB/DVI) AUDIO (RGB/DVI) connects the audio cable to the Line Out on the media player/
computer sound card.
NOTE: Before connecting to the AUDIO (RGB/DVI) port on the display, verify
what type of Audio Out connection is available on the media player/computer
sound card. The Line Out on a media player/computer is used to connect to
speakers, including a built-in amplifier (AMP). For additional instructions, refer to
the sound card manual.
If the Audio Out on the media player/computer sound card has only Speaker Out,
reduce the media player/computer volume before connecting to the AUDIO (RGB/
DVI) port on the display.
If the Audio Out on the media player/computer sound card supports both Speaker
Out and Line Out, choose Line Out.
5 DP IN and DP OUT
(DisplayPort)
DP IN supports digital input with DisplayPort cables from a media player/
computer. DP OUT supports cloning of connections with DisplayPort cables from
display to display.
6 USB USB connects a USB storage device to the HP Media Sign Player.
7 LAN LAN connects the display directly to a media player/computer or to a network
directly or indirectly by a router, hub, or switch using the LAN cable.
8 SPEAKER SPEAKER connects the external speakers to the display.
9 TOUCH Connects the display and the PC with USB cable.
VESA mounting support and security slot
VESA FDMI (Video Electronics Standards Association Flat Display Mounting Interface) wall
mounting—This product supports a VESA FDMI-compliant mounting device. The mounting devices
can be purchased separately from HP.
ENWW VESA mounting support and security slot 17