To get the latest drivers for your OS, visit the serial chipset's
manufacturer's web page at:
<br>
<br>
<a href="http://www.silabs.com/products/mcu/pages/usbtouartbridgevcpdrivers.aspx">
http://www.silabs.com/products/mcu/pages/usbtouartbridgevcpdrivers.aspx
</a>
<br>
<br>
For linux, for the rucosmic software, you do not need to download a driver.
<br><br>
For windows, plug in the USB cable and powered on quarknet board, while
watching COM PORTS using Device Manager.  If a COM port is not created 
when you plug in the cable, then install the driver using the above link.
Use the driver WITHOUT Serial Enumeration (use the Default driver).