If you are referring to the Slingbox 500 remote, you can purchase the remote online by clicking on the link below:
If you are speaking about the virtual remote, in most cases you can always try different models under the same manufacturer to find a virtual remote compatible with your cable box.
Review link below for further information:
If you find that trying the link above does not work for you, there are two other options available. You can try contacting your cable provider, to see if you can exchange your cable box for one listed in our database. However, if you do not wish to do so or you simply cannot, you can submit an enhancement request. To submit an enhancement request, please review link below:
Slingbox Moderation Team