According to this site
http://www.avtech.com.tw/english/cct...px?ID=AVC782AD
the USB port is for flash drive only not network ? is there no ethernet port on the box ?
From the device specs.
USB Interface Support USB 1.1/2.0 flash drive
Backup Device Support USB 1.1/2.0 flash drive, DVD-WRITER and network remote backup
Web Transmitting / Compression Format Motion JPEG
Ethernet 10/100 Base-T. Support remote control and live view via Ethernet.
Needs to be hooked up via an ethernet cable to your router in order to make it work