... IT, such as video and audio compression / decompression, high-capacity hard disk records, TCP / IP network technology, code in the ... HRC-168-AF-DVR-II-A/4-4 E professional hard drive with digital video recorder at the same time as the ... 10M/100M self-adapting ethernet interface, one RS232 interface, one RS485 interface.Hard disk interfaceOne SATA interface, support one SATA hard disk with a capacity of ...