User Manual
Universal Serial Bus (USB) Specific Problems
Specific What You Possible Solutions
Symptoms Experience
USB interface is USB peripherals • Check that your monitor is turned on.
not working are not working
• Reconnect the upstream cable to your computer.
• Reconnect the USB peripherals (downstream connector).
• Switch off and then turn on the monitor again.
• Reboot the computer.
• Some USB devices like external portable HDD require higher
electric current; connect the device directly to the
computer system.
High Speed High Speed USB • Check that your computer is USB 2.0-capable.
USB 2.0 2.0 peripherals
• Some computers have both USB 2.0 and USB 1.1 ports.
interface is working slowly or
Ensure that the correct USB port is used.
slow not working at all
• Reconnect the upstream cable to your computer.
• Reconnect the USB peripherals (downstream connector).
• Reboot the computer.
52 | Troubleshooting