Vomber 0 Posted March 16, 2013 Hello, I bought the other day DVR Dahua Technology-DVR1604HF-S-E. With all figured out, the only thing I can not understand why it has two network port RJ-45. And one works absolutely fine, but the second did not work at all. Maybe someone faced with this and help me understand? Share this post Link to post Share on other sites
shankarsha 0 Posted April 23, 2013 That port is rs232. Share this post Link to post Share on other sites
