BenQ LK990 User Manual page 4

Control terminals
• LAN
For connection to RJ45 Cat5/Cat6 Ethernet cable to
control the projector through a network.
• WIRED REMOTE
For connection to a wired remote control.
• AUDIO OUT
Connection to a speaker or headset.
• HDBaseT
For connection to RJ45 Cat5/Cat6 cable to input
uncompressed high-definition video (HD).
• MONITOR OUT
Connection to other display equipment for
concurrent playback display. (Used with PC IN port.)
• PC IN
15-pin VGA port for connection to RGB source or
PC.
• HDMI 3
Connection to HDMI source. (Up to 1080p and 3D
supported.)
6
• HDMI OUT
Connection to other display equipment for concurrent
playback display. (Used with HDMI 3 port.)
• HDMI 1 (HDCP2.2)
Connection to HDMI (4K) source with HDR supported.
• HDMI 2
Connection to HDMI source. (Up to 1080p and 3D
supported.)
• 12V TRIGGER
Trigger external devices such as an electric screen or light
control, etc.
• USB MINI-B
For firmware upgrade only.
• USB TYPE A
This port supports 5V/2A output.
• RS232
Standard 9-pin D-sub interface for connection to PC
control system and projector maintenance.