Cause: Problem of computer USB port or hardware of compatible devices.
Solution:
Cause: Blocked by security software or insufficient power supply from the USB port. Solution: Disable the camera protection function...
Environment 1: The white USB port supplies power. The black serial plug connects to the cashier counter. The black...
Cause: The serial cable of the printer is not properly connected. Printer configuration error. Solution: Reconnect the serial cable;...
Cause: As there are too many people connecting to the Internet simultaneously, they interfere with each other, resulting in...
Enter the URL (http://dm.2dupay.com/wifi-config/wifiConfig.html) on the mobile phone or scan the QR-code of the configuration page to enter the...
Enter the URL (http://dm.2dupay.com/wifi-config/wifiConfig.html) on the mobile phone or scan the QR-code of the configuration page to enter the...
Power on: White light keeps on with a beep sound. Normal operation: White light keeps on. Scanning: The device...
