Conrad Course material 10127 14 years and over 10127 Manual De Usuario

The USB connection cable of the learning package has a USB A plug on one side 

and a pin plug for the plug board on the other side. This permits connecting the 5 V 

(Volt) power supply of a USB source (USB mains plug) to the plug board.

Important!
When connecting the pin plug to the plug board, always observe polarity! The 

red cable to the pin plug is the plus pole, the black is the minus pole.

    

Fig. 002: USB connection cable, connection assignment of the plug: 

1 = GND, 2 = D+, 3 = D-, 4 = +5 V 

Important note on use of the USB power supply 
It is urgently recommended to use a simple USB mains unit for the following

experiments (e.g. for a mobile phone) with 5 V voltage and at least 500 mA

(milliampere) power output. 
The USB power supply for the experiments could come from the computer‘s

USB socket, but this is urgently advised against!