Hauppauge 01200 WinTV-HVR-850 USB2.0 Hybrid Video Recorder 1200 (HAUP1200) Digital ATSC over-the-air TV tuner built-in. A portable digital TV antenna can be used to receive digital TV up to 10 miles from a ATSC transmitter Record ATSC digital TV programs to your PC's hard disk using high quality MPEG-2. TV recordings will typically consume 5 Gigabytes of disk space per hour for ATSC high definition Record analog TV shows to your PC's hard disk using our SoftPVR MPEG-2 encoder. Analog TV recordings will typically consume 1.5 Gigabytes of disk space per hour Host Interface: USB Functions: TV Tuning; Video Recording Video System: ATSC; NTSC Video Formats: MPEG-2 Interfaces/Ports: 1x USB Connector; 1x F Connector Operating System Required: Microsoft Windows Vista or XP with Service Pack 2 System Requirements:2.2 GHz Intel P4 or 1.8 GHz Centrino or equivalent (minimum) 2.8 GHz Intel P4 or Core Duo or equivalent for analog TV recording with MPEG-2 (minimum) Graphics with 64 MB of memory (minimum) USB 2.0 port (will not work with USB 1.1) CD-ROM drive (for Software installation)