Go through the following:
1. Press the Windows Key plus R, type "devmgmt.msc", and press Enter.
2. In Device Manager, under the appropriate heading, confirm that your expansion card is listed and that there isn't an exclamation mark next to it. For example, a USB controller card would be under Universal Serial Bus controllers.
3. Your USB device is listed according to the name of the chipset or the dedicated name.

Go through the following:
1. Click the Apple icon.
2. Click About This Mac.
3. Click More Info or System Report.
4. Under the appropriate heading, please check that your USB device is listed (according to the name of the chipset or the dedicated name) and that there isn't an error. For example, a network card would be under Ethernet Cards.
5. You may have to refresh the System Information page after you plug in your device. To do so, press Command + R with the System Information page open.
 

If you disconnect a power input from the multiport USB hub during the transmission of the files to or from an attached storage device, it will stop the transmission and may cause file corruption. It is also possible that there will be a loss of function if the power input is removed from the USB hub while it is in operation. 
It is important to always follow the disconnection steps listed following:
1. Complete all data transfers over USB to and from the attached storage device.
2. Disconnect the USB hub from the host computer.
3. Disconnect your power input from the USB hub.
4. Eject your attached storage device.