I have been working with computers and video for about 30 years. I bought 2 of these for backups to my exiting capture cards. I did check these cards out when I recieved them. They recorded fine. The problem is the frame rate (29.97 for USA) varied.any where from 30.4 ro 32.21. The frame rate being off prevented me from editing the captured video file. I contact the MFR and they told me the cards were not designed that way. Newer cards don'ty have a seperate audio in from your audio card and record to mpg rather than avi. I will be returning the 2 cards.