I bought this product to copy the contacts from a SIM card in a change of operator. The product allows you to play sim cards without any problem. The software on the mini cd was not usable dvd drive my pc does not recognize it. I was on the CONNECTLAND website and I downloaded the software corresponding to the product of the number printed on the label underneath the device. I installed the software on my pc in windows 7 and I read the contacts of the SIM card and copy them to a text file on the PC. I introduced the new SIM card and I copied the contacts from the text file into the new sim card. It is very easy with the software, the list on the left being for the sim card and the right list to text or csv file. So this product is very good for a modest price.