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4x 422/485 USB 478
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4x 422/485 USB

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USB to four serial port converter with DB9 (9-pin male) connectors. RS-422/RS-485
Features : USB-4COMi l Adds four high speed RS-422 ports via USB connection l 384 byte receive buffer l 128 byte transmit buffer for high data throughput l Data rates: 300 bps to 230K bps l Serial connector: Four DB-9 male connectors l Easy connectivity to printers, POS, Industrial control devices l Data signals: TX-, TX+, RX+, RX-, GND, RTS-, RTS+, CTS+, CTS- l Self-powered. External power supply included. . ...
Part No. USB-4COM-I | View Details
$129.89
8-Port X DB-9 RS-232 USB Serial Adapter Data Control Box
Features : Converts a USB port into 1, 2, or 4 serial ports capable of speeds up to 230,400 bps. These USB Serial Converters are designed to make serial port expansion quick and simple. Connecting to a USB port on your computer or USB hub, the USB Serial Converters instantly add serial communication ports to your system. By taking advantage of the USB bus, the USB Serial Converter makes it easier than ever to add serial ports and serial devices to your system with easy plug-and-play and hot plug features. Plugging the USB Serial Converter to the USB port, the converter is automatically detected. There are no IRQ & COM port conflicts since the port doesn't require any additional IRQ, DMA, or memory...
Part No. 8XDB9-USB | View Details
$199.98

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