The WinTV-HVR-850 is a USB2 TV Stick with a Hybrid TV tuner receiver for both NTSC analog or over-the-air ATSC hi-definition digital TV. Watch pause and record television on desktop notebook or laptop computers. Its Pocket Size form factor makes it the perfect traveling companion for use with laptop and notebook computers. Ships with standing portable telescoping antenna. Compatible with Windows Vista Windows XP XP Pro or XP Media Center Edition with Service Pack 2. Packaged in blister pack for peg or standing on shelf.