... Mobile, BlackBerry, Symbian, Android),support 3G & WIFI extension.5.Support 2 * USB2.0 interface, to achieve stable operation of USB Mouse ... ,make surveillance more easy and relaxed. And also provide DDNS server such as 3322,dyndns,oray,myq-see,etc.10.Perfect ... RS232; support 18 PTZ protocolUSB port2* USD2.0HDD port2 SATA ports, max 2T for each port.Wireless port3G,WIFI(connect USB ...