That depends on which cable you're talking about. The HDMI cable is simply an HDMI cable. You can get them at Walmart, CVS, Family Dollar, or just about anywhere.
If you're connecting to an HDMI-ARC port, that's the only cable you would need. If it's not HDMI-ARC, you may also be using the optical cable. It's just an optical cable. Walmart may have them. Best Buy will for sure. Any electronics store or department should have them.
DBDukes Roku Community Streaming Expert Note: I am not a Roku employee.
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