5
QUICK GUIDE / DL-N5USB-PHUB
MAINTENANCE AND TROUBLESHOOTING
No power
• Check if the power adapter is normal, and ensure the provided power adapter is used.
• Press the power button to see if the device can be powered on.
LED corresponding to USB port is off
Check to see if the port is closed, and press the corresponding button to open it.
LED 4 (and other LEDs) are off when it is connected to a USB device
It exceeds the power supply capability of the device after this USB device is connected. Please reduce
the quantity of USB devices or remove the high-power USB device.
The inserted USB device can’t be recognized
Please hold the corresponding ON/OFF Power button down for about 3 seconds to close the port and
then press it to open the port again.
USB 2.0 port can’t be connected to U disk or other USB devices
The USB 2.0 port is a charging-only port and does not support data transmission. It can charge devices
such as an tablet or phone.