The TW6802B is a mixed-signal video processing IC. Its primary characteristics include:
Assuming you have a genuine TW6802B card (look for the chip marking), here is the definitive installation procedure for Windows 7 64-bit: dvr card techwell tw6802b driver for win 7 64 bit hot
You cannot use the card with standard webcam software like Skype or Zoom directly. You require DVR-specific software. Common compatible software includes: The TW6802B is a mixed-signal video processing IC