After replacing my PC used for remote support purposes I needed a way to continue to use my analog modem. Today's desktop PC usually have no built-in V.24 interface more, but lots of USB ports. However, as my desktop PC had a free PCI-Express slots and this is the more elegant and cheaper option, I have this card have preferred an external adapter USBV.24. The installation of the drivers worked on Windows 7 64 bit without any problems. Activation of my modem of type "Devolo MicroLink 56k i" worked in the four weeks, where I previously had the card in use, also without difficulty.