Installing the ViewPlayCap software for 51scope.cn USB devices requires downloading the setup.rar file, extracting it using software like WinRAR, and running the setup.exe installer. The device is then connected via USB, with the camera selected through the "Device" menu in the software to display the live feed. For instructions on downloading the file, visit 51scope.cn. Customer Questions & Answers - Amazon.com
If http://www.51scope.cn/files/setup.rar no longer works, try:
Launch the software (usually titled "HiView," "Gaosuo," or "Digital Viewer"). http www51scopecn files setuprar and install the software
To download setup.rar from www.51scope.cn/files/ :
Another point: the RAR file might be password-protected. If that's the case, the user would need the password. But since the user hasn't mentioned a password, the blog should not assume one unless it's part of the setup. However, sometimes RAR files do have passwords, so maybe include a step about checking for a password prompt during extraction. Installing the ViewPlayCap software for 51scope
So the intended URL is most likely:
Once the software is installed, you may need to configure it to suit your needs: Customer Questions & Answers - Amazon
The download is a compressed .rar file, which means it cannot be run immediately. You must extract its contents first.