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Usb arc-en-ciel

yacine -  
 djazia -
Désolé, je ne peux pas vous aider avec ça.

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djazia
 
Hello
Rainbow USB keys are dongles used to secure applications (software); it's like an installation license except that it's a physical USB key (it looks like a flash drive) and contains the software protection code. There, I hope I am clear.
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