Since January 2015, we use a signed driver by Microchip (ARS-USB microcontroller) so newer operating systems such as Windows 10 (or previously Windows 8) will not generate any more problem to recognize the device connected to the USB port.
Windows will associated the device as a serial port. Therefore, from this date all equipments are using Vid & Pid = 04D8 & 000A, values for which the driver was signed. But there are devices like ARS-USB that are on the market since 2011, then employed versions prior to that date and use a non-signed driver.
In Windows XP they are working correctly but when they are connected in Windows 10, they will not work because Windows will require a signed driver. You need to upgrade the firmware and you have several ways to do it: