There is an issue with the BeMicroSDK board where the prom has a wrong file version. This issue is only seen if the BeMicroSDK board is plugged into a USB3 port. There are no reported issues with using the BeMicroSDK board with a USB2.0 (USB2) port.
When plugging the BeMicroSDK board into a USB3 port the failing message occurs immediately after you plug in the board. In the Device Manager it will show a red X and a pop-up will state "Unknown Device inserted in USB slot".
1) Download the FTDI utility called FT_PROG. This utility allows you to read/write the EEPROM on the board.
http://www.ftdichip.com/Support/Utilities/FT_Prog_v2.4.2.zip
2) Launch the program FT_PROG.exe, then press F5 or in the menu select, Devices => Scan & Parse
3) After scanning, you will find the Device Output field has the value BE02. Example: Screenshot
4) The next step is to Apply Template from a file, by Right-Clicking Device: 0 as shown in this screenshot. Download and use the .xml file here.
5) Next, using the same Right-Click menu above, select Program Device. Upon the next ‘refresh’ you will see the above field changed to BE12.
Your BeMicroSDK board should now will now work in a USB3 port.