GV-650B Card provides up to 8 video channels and 4 audio channels, recording up to 60 / 50 fps (NTSC / PAL) in total with H.264 software compression. The 1-8 Cams with 4-Port Audio DVI-Type cable is supplied with GV-650B card with 8 video inputs. 8-port has the same recording rate and display rate as 16-port. GV-650B is currently not compatible with VIA series and ATI series chipset motherboards. Interface: PCI?E (x1). OS supported: Windows 7 / 8 / 8.1 / 10 / Server 2008 R2 / Server 2012.