Fake (waste)

From a USB port come into digital signals and it must also re-Digital signals pure (ones and zeros, high and low, 5V or 0V). In a 3.5 mm jack to analog signals (sine wave 20Hz-20kHz for music, for example).

It can not work, for example, a cassette adapter for radio cassette on the car to one side, a USB flash drive to the other side (Where is to come in this example, the power of the stick, who is to address the stick (USB host such as a computer) how should a tape deck (which it never gets) to play the data?

The 5-star reviews are obviously fakes.