1. Please unplug the hub and see if your computer is then able to shut down.
2. Please unplug the AC adapter from the hub and see if the PC will shut down properly with the hub plugged in. If this solves the problem then the issue is with the hub. Please feel free to contact our support team for an exchange or refund. If it does not help, Please attempt the further troubleshooting below:
a. For Windows users: Adjust your power settings as follows: Right-click “My Computer”, select “Attributes”, then “Hardware”, followed by “Device Manager”, double-click “Universal Serial Bus Controllers”, right-click “USB Root Hub”, click “Attributes”, then “Power Management”, unmark “Allow computer to close the device to save power”, click “Yes ”, and then restart the computer.
For Mac users, please uncheck the box "put the hard disks to sleep when possible" in energy saver.
b. Check the USB 3.0 host and update its driver to the latest.
c. Try a different USB 3.0 cable/usb port.
If the further troubleshooting doesn't help then contact our support team.
Our cateck Hubs are plug-and-play so there's no need for extra drivers, but we do recommend updating your USB controller’s drivers and firmware to the latest version. This ensures a smooth experience using any USB devices. To do this you should identify the brand of your USB controller then search online, or contact your PC/motherboard supplier directly.
2.4Ghz wireless devices may have frequency interference issues with USB 3.0 ports so we recommend using a USB 2.0 hub instead.
This could be to do with the firmware on your Western Digital hard drive. Try installing new firmware, downloadable from the Western Digital website.
For maximum performance, connected devices should not exceed the combined current of the output of hub. Otherwise, output current may become unstable or disconnect entirely. See some commonly used devices' general requirements below:
250G Hard drive – 600mA
4G Flash drive – 100mA
64G SSD – 400mA
100M Network adapter – 500mA
Keyboards and mice and other peripheral devices – 100mA (or less)
The ratings above are estimates only. Please check your specific device's ratings before connecting to the hub.
USB 3.0 connectors and cables can radiate interference in the 2.4 GHz spectrum that causes Wi-Fi and Bluetooth signals to intermittently drop out when they're near the antennas. You can refer to the link below for further reference: http://www.intel.com/content/www/us/en/io/universal-serial-bus/usb3-frequency-interference-paper.html
For the MacBook Pro and MacBook Air, those antennas happen to be near the screen hinges along the back of the computer. Moving the hub away from this area could help to improve your WiFi signal.