The AVerTVHD Bravo will give your existing HTPC a 'Power Boost' to higher levels of HD digital entertainment. It's designed to receive High Definition Digital TV Over-the-Air (ATSC) or Unencrypted Digital Cable (ClearQAM*) signals directly to your PC! The AVerTVHD Bravo is a digital tuner, with a single input, that adopt the brand-new PCI Express interface. By using the bundled software AVer MediaCenter, you can relax and enjoy your favorite TV shows in High Definition TV viewing up to 1080i resolution with aspect ratios of 4:3 and 16:9 with the 10-foot experience. Also, with Microsoft Media Center (Windows Vista or Windows XP) compatible platforms, AVerTVHD Bravo brings you to a relaxed TV world.