When my hub is connected through the ports on my Apple expansion card it fails to be recognised, 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.
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. Why?
This problem may be the result of one of the following:
a. Insufficient power supply. Please connect the USB hub to a power source.
b. Compatibility issues between the motherboard and system. Please try refreshing the BIOS in the motherboard.
c. Incorrect insertion or unplugging. Do not unplug the device when transferring data in order to avoid damaging the chipset.
d. Improper driver installation. Under “Device Manager”, go to “Other Devices” and select “Universal Serial Bus Controllers”. If there are any yellow question or exclamation marks visible, uninstall the driver in “Device Manager”, then restart your computer. The driver will be reinstalled automatically.
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.