WinTV-quadHD features:

• Four tuners on one half height PCI Express board. WinTV-quadHD will fit in both full and half height PC's
• Watch, pause or record up to four ATSC or clear QAM HD TV programs at the same time
• Includes a Hauppauge remote control, with 1 meter IR receiver cable
• Includes the WinTV v8 application, which give you TV-in-a-window or TV full screen, plus picture-in-picture
• Also works with Windows Media Center (included in Windows 7 and optional in Windows 8). The WinTV-quadHD is seen as 4 tuners so you can watch one TV program or record up to 4 TV programs at the same time.
• ATSC is free HD TV for the U.S. and Canada
• Clear QAM is digital cable TV (please contact your cable TV provider to see if clear QAM is available in your area)

ATSC over-the-air digital TV features:

• ATSC is free over-the-air HD TV. ATSC is broadcast in the US and Canada, and does not require a subscription. ATSC is HD and FREE!
• WinTV-quadHD has four ATSC over-the-air digital TV tuners. Supports all ATSC formats, up to the highest HD format
• Watch, pause or record up to four ATSC digital TV programs using high quality MPEG-2. TV recordings will typically consume 5 GB of disk space per hour for ATSC high definition
• Built-in antenna splitter allows you to make one connection to an ATSC antenna but watch and record up to 4 channels

Clear QAM digital cable TV features:

• Quad clear QAM digital cable TV receivers. Watch and record up to four clear QAM digital cable TV channels at the same time
• Built-in cable TV splitter allows you to make one connection to cable TV
• Note: not all cable TV networks send clear QAM channels. Please check with your local cable operator for the availability of clear QAM digital cable TV