Cisco, DVR, models:

4642	Quick Start Manual
4742HDC	User Manual
8389DVB	Installation Manual
8455DVB	Quick Reference
8642HD	User Manual
CHS 335HDC	Installation Manual
DVR	Configuration Manual
Explorer 4640HD	User Manual
Explorer 4642HD	Datasheet
Explorer 4700	Hardware Installation And Maintenance Manual
Explorer 8000	Getting Started Manual
Explorer 8240C	User Manual
Explorer 8240HD	User Manual
Explorer 8300	User Manual
Explorer 8450HDC	User Manual
Explorer 8540HD	Quick Reference Manual
Explorer 8550HDC	Quick Reference Manual
Explorer 8640HDC	User Manual
Explorer 8700 Cable DVR Family Set-Tops	Quick Reference Manual
Explorer RNG200	User Manual
Scientific Atlanta Explorer 8300	User Manual
Scientific Atlanta Explorer 8300HDC	Manual