Dahua Technology, DVR, models:

D-XVR5108H-4KL-I3	User Manual
D-XVR5108H-4KL-X-8P	User Manual
DH-5208AN-4KL-X-8	User Manual
DH-XVR Series	User Manual
DH-XVR1B -I Series	User Manual
DH-XVR1B04	User Manual
DH-XVR1B04-I	Manual
DH-XVR42 AN-I Series	User Manual
DH-XVR5104HI	User Manual
DH-XVR5216AN-I3	User Manual
DH-XVR58 S-4KL-I2-LP Series	User Manual
DH-XVR71 H-4K-I2 Series	User Manual
DH-XVR7208A-4KL-I	Manual
DHI-IVSS7008	User Manual
DHI-XVR5108HS-4K	User Manual
IVSS	User Manual
IVSS Series	User Manual
X28A5S Series	Quick Start Manual
X38A3S	Quick Start Manual
XVR Cooper Series	User Manual
XVR Series	User Manual
XVR4 Series	User Manual
XVR5232AN-I3	User Manual