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c. The device is being plugged in too slowly. As a result of the USB 3.1 GEN1 interface design, the
system will recognize devices as USB 2.0 when they are plugged in too slowly, or section by section.
A surge warning appears on the screen when the USB hub is connected to the computer. Why is this
happening?
When the input current requirement of a connected device is higher than the output current of the
USB port, a surge warning may appear. Connect the USB hub to a power source to ensure sufficient
power supply.
If the problem persists, please check to make sure the USB driver is installed properly, or click the
USB icon on the taskbar and select “Reset” to make sure the USB device is being identified correctly.
Why the devices are not being identified by my computer when connected to the USB hub, but they
are being identified when connected directly to the computer?
The issue could be of any of the following reasons:
Compatibility between the motherboard and system. Please try refreshing the BIOS in the
motherboard.
Incorrect insertion or unplugging. Do not unplug the device when transferring data in order
to avoid damaging the chipset.
Improper driver installation. In “Device Manager”, go to “Other Devices” and select
“Universal Serial Bus Controllers”. If there are any yellow questions or exclamation marks
visible, uninstall the driver in “Device Manager”, then restart your computer. The driver will
be reinstalled automatically.
When my hub is connected through the ports on my Apple expansion card it fails to be recognized,
why is this?
Mac expansion cards don’t tend to support non-storage devices (more info is available from your
expansion card manufacturer's websites). It is recommended that you plug hubs into the Mac’s built
in USB ports.
Why does Apple SuperDrive not work with QZ hub?
Apple have addressed this issue and said that SuperDrive is only designed to work with USB ports on
selected Apple computers. It is not recommended for use with USB hubs. (See Apple support article
http://support.apple.com/kb/ht2801)
My Western Digital hard drive cannot be recognized by your hub? How to fix it?
This could be to do with the firmware on your Western Digital hard drive. Try installing new
firmware, downloadable from the Western Digital website.
