You can purchase approved modems from several major retailers:

: Stores like Best Buy, Walmart , and Newegg stock high-performance brands like Arris and Netgear.

: Websites like ModemGuides or BuyApprovedModems specifically list hardware tested for Spectrum's network. Using your own equipment on our network | Spectrum Support

Time Warner Cable was acquired by Charter Communications and rebranded as in 2016. Because of this, you should look for modems labeled as Spectrum-compatible to ensure they work with your current service. Where to Buy a Modem

: Amazon and eBay offer the widest selection of new and renewed DOCSIS 3.1 models.