1PC Four-generation lens HDCI to HDMI+DB9 compatible POLYCOM adapter cable RS232
Special with chip: support Polycom GROUP300, GROUP310, GROUP500, GROUP550, GROUP700 hosts!
RS232 control line self-provided instructions
1. RS232 wiring sequence
DB9-----DB9
2------2
3------3
5------5
2. The HDMI cable uses at least the standard HDMI version 11.4
3. If you use a matrix, please use a standard HDMI matrix, do not use a DVI matrix.