The CE790R is receiver half of the CE790 digital KVM extender set and is also sold separately to expand your capabilities. The CE790R connects to a transmitter unit CE790T over your network. The receiver can select connection to a particular transmitter. An intuitive On Screen Display (OSD) simplifies the connection process . The number of potential transmitters a receiver can connect to is limited only by the number of free IP Addresses on your network More information on the CS790R can be found on the CE790 web page.