HAUPPAUGE WinTV-quadHD PCI Express TV Tuner Card 1609 Four Tuners on a half height PCI Express board.Built-in cable TV splitter allows you to make one connection to cable TV. For use in both full and half height PC's. Supports four tuner picture-in-picture Watch, pause and record up to four ATSC or clear QAM HD TV programs at the same time Note-if your pc is not fast enough, you might see jerky live tv video but tv recordings will be fine Please Note: Kindly refer the User Manual before use..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