Null Modem serial cables allows two DTE or DCE devices to communicate with no conflict in data transmission. The transmit and receive signals are crossed to ensure proper data transmission. These inexpensive, high-quality cables deliver the data for you quickly and reliably over short distances (less than 100 feet). Each of our Null Modem cables are designed with a rugged, overmolded construction that provides added strain relief and a solid connection each time.