Polycom 1 - Manual (Page 153)

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System Back Panel Views
Polycom HDX 9004 Video Inputs and Outputs
Video Inputs 1 and 2: HDCI
for camera 1 and camera 2
Video Input 3: BNC for
VCR/DVD to play content into
calls
Video Output 1:
BNC and DVI for
main monitor
Video Output 4: DVI for
content display
Video Input 4 and 5: DVI for
playing content from a computer
into calls
Video Output 2:
BNC and DVI for
second monitor
Video Output 3: BNC for
recording calls to
VCR/DVD