If you are talking your external bandwidth, here are details on what Tablo will use…
“The data required to download Tablo’s TV guide is minimal - about 10-11 MB of data per month per channel.”
“The data required to download Tablo firmware updates is also minimal - on average approximately 24 MB per update.”
However, if you have have the commercial skip service as well, it will use noticeably more bandwidth…
“*** UPDATE - All Tablo DVRs will also use between 100-200 MB/hour of recording in external internet bandwidth if you have the Automatic Commercial Skip feature enabled. ***”