As of August 1, 2022, Suddenlink has merged into Optimum (view the Optimum approved modems page).
There are no more Suddenlink approved modems, since Optimum has now eliminated Suddenlink.
Suddenlink Approved Modems Removed in July 2017
ARRIS SB6190
Suddenlink Approved Modems Added in March 2018
ARRIS SB6190
Read about the Optimum and Suddenlink merger.