MJPEG Stand-Alone Dvr LL-8004S Specification:

Video Input/Output:   BNC 4-channel input/1-channel output     
 Audio Input/Output:   RCA 1-channel input/1-channel output
Option(USB 2.0 ports)
Compression Method:   Modified  MJPEG
Over 200G Byte, ATA-100 interface
Dimensions:(L×W×H) 250mm×232mm×38mm,weight: 4.5kg