BenQ RP552H User Manual - Page 17
Input/output terminals (RP840G), HDMI IN, VGA OUT, AUDIO IN, VGA IN, TOUCH, AV IN, COAX OUT, RS232
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Parts of the display and their functions 13 Input/output terminals (RP840G) HDMI4(4K2K) HDMI4(4K2K) LAN No. Name 1 USB 2 HDMI IN Description Connects USB devices such as USB keyboards, USB mice, and USB flash drives. High-definition multimedia interface signal input. Connect to PC with an HDMI output, a set-top-box, or other video devices capable of realizing touch function. HDMI 4 realizes 4K2K resolution. 3 VGA OUT Connects to display devices with a VGA input. 4 AUDIO IN External computer audio input. 5 VGA IN External computer image input. 6 TOUCH External computer touch signal input. Default touch function is available under internal computer, when connecting external computer, besides connecting external computer VGA and audio signals, external computer's USB port needs to be connected to the equipment. Under the condition that driver is installed, external computer can be touch controlled through the equipment (touch function is effective in PC, VGA and HDMI channel by default) 7 AV IN Composite video and audio input. 8 COAX OUT Coaxial output. 9 RS232 Serial interface, used for mutual transfer of data between devices. 10 EARPHONE Connected to device with headphone input function. 11 LAN LAN interface, connecting RJ45 terminals. (This network port is only used for the closed Android OS on this product.) 12 AC IN AC power input, connecting AC power supply. 13 POWER SWITCH Power switch, to open and shut down AC power supply.