Product DescriptionCCTV Video Caputure card 4ch Video Inputs: 4 Channels, Audio Inputs: 4 Channels Display Rate: 120fps(NTSC), 100fps(PAL) Recording Rate: 120fps(NTSC), 100fps(PAL) Compression Format: H. 264 Hardware Compression Preview Resolution: 704*288, Recording Resolution: 352*288 Support IE Browse OS: Windows 2000 / XP