The C61 is the Forth Generation client receiver from made to work with Genie servers. This client will only work with the Genie servers - the HR34 and HR44 and HR54. You can attach up to five C31 or C41 or C51 or C61 to your Genie DVR, but only three can be used at any one time. So we recommend just having a maximum of three clients attached. If you need to supply more TVs, we recommend the H25, which can use its own tuner.