Ucom 704 Driver Download Free Exclusive Info
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| Error | Probable Cause | Solution | |-------|----------------|----------| | | Windows 10/11 blocks counterfeit PL-2303 chips | Use the older driver v3.3.2.25 or buy a genuine adapter (FTDI chip). | | Code 28: Driver not installed | Incomplete installation | Run the installer as Admin. Manually update driver from Device Manager. | | COM port above COM9 | Legacy software limitation | In Device Manager, change COM port to COM1-COM9 via Port Settings → Advanced. | | Device disappears after sleep | USB selective suspend | Go to Power Options → Change plan settings → Change advanced power settings → USB settings → Disable. | You have no idea which chipset
Then, the audio started.