For developers looking for libraries rather than just drivers, GitHub is an excellent resource. Search for "ZCS100-IC" or the specific chip name on GitHub to find Python libraries, C++ wrappers, and Arduino IDE integration scripts that allow you to program the device directly.
The most reliable source for a is the vendor from whom you purchased the hardware. Most reputable sellers (on platforms like AliExpress, Amazon, or DigiKey) provide a link to a Google Drive or Dropbox folder in the product description or via a QR code printed on the device manual.
On Windows, if you have used many USB devices before, the ZCS100-IC might be assigned a COM port number like COM15 or COM20. Some legacy software cannot see ports higher than COM4.