GV-600B Card provides up to 16 video channels and 4 audio channels, recording up to 30 / 25 fps (NTSC / PAL) in total with H.264 software compression. The 1-16 Cams with 4-Port Audio DVI-Type cable is supplied with GV-600B card with 16 video inputs. GV-600B is currently not compatible with VIA series and ATI series chipset motherboards. 8-port has the same recording rate and display rate as 16-port. Interface: PCI?E (x1). OS supported: Windows 7 / 8 / 8.1 / 10 / Server 2008 R2 / Server 2012.