Short description of Eltima Virtual Serial Ports Driver XP 5.1: Eltima Virtual Serial Ports Driver XP 5.1 enables to create any number of pure virtual serial ports in your system connected into pairs via virtual null-modem cable without using any real serial ports. Virtual Serial Ports appear to operating system or any Windows application as "standard" hardware serial ports. This is helpful for serial software and GPS software developers, telecommunication and data transmission specialists.