... 4 channel dvr DVR 1.H.264 Compress 2.Supports SATA HDD, 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- ... For PTZ and keyboard),USB2.0x2,ESATAx2PTZ ProtocalPelco D, Pelco P, RANGE, VISCA, DSCP, VIDO, STAR, NEON, MINKING, ...