I have a USB flash MP3 player with an unknown brand that there was no installer CD. After I connect the USB cable and plug into your PC, MP3 USB is not detected. Is there a tool or a universal installer for all brands MP3 for my MP3 not clear which kind of production? Where do I have to download it? Answer: Usually, this problem occurs because the data cable that is not appropriate. That is, the data cable that is used is not supported for data transfer, only for charging, either from a PC or a charger luggage. Try changing the data cable. MP3 player is supposed to be directly detected as a USB drive if your operating system is Windows ME through to 7.