The Cisco uBR10-MC5X20U-D cable interface line card transmits and receives RF signals between the subscriber and the headend over hybrid fiber/coax (HFC) network.The Cisco uBR10-MC5X20U-D cable interface line card supports both DOCSIS and EuroDOCSIS cable modem networks. The Cisco uBR10-MC5X20U-D cable interface line card supports Annex A and Annex B radio frequency (RF) data rates, channel widths, and modulation schemes.