... , 2 USB2.0 3.Built-in web server 4.CE,FCC,ROHS... Features: 4 channel dvr(1). Compression Format: H.264 (2). Support ... 4 CH D1 and 1 SATA ports (3).Support GPRS ... /3G mobile real-time monitor (4).Language:Chinese,English,Japanese,Spanish, Germany,French,Italian,Russian,Poland ...