USB Null Modem Cable Eases Connectivity Between PCs
Future Technology Devices International Limited (FTDI) announced availability of its USB NMC-2.5m USB to USB Null modem cable. Using an approach that was established using legacy RS-232 serial COM ports when the PC industry was in its infancy, the USB NMC-2.5m offers a quick and convenient method of inter-PC communication using USB ports. Packaged similar to a standard USB cable, featuring USB type “A” plugs at each end, both plugs conceal an FT232RQ USB-UART converter IC together with supporting components on a small PCB. Data is sent across cross-connected TXD / RXD connections while the RTS / CTS signals provide handshaking. A common GND reference rail links the two converter PCBs. The USB NMC-2.5m cable is 2.5m (8.2 feet) long. Used together with FTDI’s Virtual COM port (VCP) drivers, the USB NMC provides inter-PC, COM Port-based communication at up to 3M baud rates.
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