Avermedia DVR cards are famous as they are cost effective, scalable products that includes Linux DVR, embedded linux stand alone dvr, or PCI dvr surveillance, or Windows based PCI dvr capture cards that can be stacked. Avermedia DVR is a 20+ year old video capture and editing card manufacturer, and in the past 4 years, expand its product line to include video surveillance. Its system is fully adaptable to North American Internet (flexible web server port assignment, dynamic DNS). The strength of the aAvermedia dvr product line is in its capability to be stacked (expand), able to work with IP and non-IP cameras, strong object search capability. This product has better than average video quality, and lots of new feature in upcoming software versions