Hauppauge 1213 WinTV-HVR-2255 Dual Hybrid PCI-E TV Tuner Board with Media Center Remote Control and Receiver Dual tuner TV board for your PC: two analog / digital TV tuners. Watch and record two cable TV programs at the same time! Dual built-in hardware MPEG-2 encoders for recording analog cable TV, for the best system performance. Windows Vista Media Center compatible. Single slot PCI Express (PCIe) X1 board, half height Two analog cable TV channels, two digital TV channels or one analog cable and one clear QAM digital cable TV channel. Watch and record 'clear QAM' digital TV channels are TV channels which are broadcast "in the clear" on your cable TV network. Built-in antenna splitter allows you to make one connection to an ATSC antenna but watch and record up to 2 channels. Includes Hauppauge's WinTV v6 application, which allows you to watch analog cable TV, QAM and ATSC digital TV channels. Watch one ATSC digital TV program while recording another ATSC program to your PC's hard disk using high quality MPEG-2. Dual digital TV receivers for ATSC or clear QAM. Watch and record two digital TV programs at the same time. TV recordings will typically consume 5 GB of disk space per hour for ATSC high definition. Watch and record all ATSC and QAM formats, including the highest definition 1080i format. Supports Dolby Digital AC3 audio.