01. The serial cable or USB cable is not connected to the sending card.
02. Computer COM or USB port is bad
03. Serial cable or USB cable is bad
04. Sending card is bad
05. No USB driver installed
Hangel Marketing Center Removed to Factory
Hangel Vacation Arrangement for 2020 Chinese New Year
Relocation Notice
Hangel Logo Updating
LED Display Lifetime
LED Display Video
FAQ About Hangel Technology
Prompt "No Send Card Detected" at Start-up
System Troubleshooting LED Display System Failure
LED Display Electrostatic Protection Principle And Protective Measures