... , 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 ... : 100V - 240V 50/60Hz; Output: DC 12V D1 H264 4 channel dvr