I was extremely excited when I received this product and have had good success with Samsung products. However, when I made all the connections, the unit didn't work. I was disapointed and frustrated. All the connections and settings were correct, but it didn't work. I have an older DVI connection instead of the newer HDMI digital connection.I returned the product and bought the Humax brand HDTV tuner. I bought a DVI to HDMI cable and connected the unit. It works like a charm! I don't know what was wrong with the Samsung SIR-T451, but I wouldn't recommend this product to anyone. I'm also having second thoughts about Samsung products now. It seems like the reliability/quality factor of Samsung products has declined now that they are more mainstream.