usb serial adapter from $19.95 only at serial adapter source www.USBSERIAL.com
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 2...
Part No. USB-4COM-I | View Details
$139.98
USB 8 Port Serial DB-9 RS-232 Adapter Box with Prolific Chipset
Features :

Plugging the USB Serial Adapter into the USB port, the adapter is automatically detected and installed. 

Supports Windows 7 and Vista (32 and 64-Bit)

There is no IRQ & ...
Part No. USBG-8X-RS232 | View Details

$144.13
USB-4COMi-M USB to Quad RS-422/485 Metal case with DIN-Rail
Features :

USB-4COMi-M USB to Quad RS-422/485 Serial Adapter for Windows 10, 8, 7 and Server 2003/2008 is housed in a metal chassis to protect the item. External dip switches to easily configure the item in w...
Part No. USB-4COMi-M | View Details

$149.78
8-Port X DB-9 RS-232 USB Serial Adapter Data Control Box Eight Port Serial
Features :

USB to 8 Port Serial adapter, adds 8 RS232 DB9 Serial Ports to your system.

Converts a USB port into 1,2,3,4,5,6,7,8-serial ports capable of Serial ports speed up to 921.6K bps . Each p...
Part No. 8XDB9-USB | View Details

$159.98
USB USB 2.0 Serial high speed adapter box industrial 8-port RS-232 FTDI
Features :

RoHS Compliant PRO 8 Port USB Serial Adapter with Com Port Retention Technology and High-Speed 920K Support.

Supports Windows 10, 8, 7 and Vista (32 and 64-Bit)

...
Part No. USB2-8COM-M | View Details
$169.98
USB 2.0 to 4-Port RS232-422-485 Serial TB Adapter Isolation | Surge
Features :

4 optically isolated and surge protected terminal block ports

The USB2-4COMi-SI-TB is a USB 2 to 4-port industrial serial adapter that protects your device(s) with optical Isolation, 15...
Part No. USB2-4COMi-SI-TB | View Details

$189.95
4-Port DB-9 Male Isolated USB to RS422 RS485 Serial Adapter
Features :

4-Port RS232 / RS422 / RS485 Isolated Adapter

The CM-422485-i4 Isolated USB to 4-Port serial interface adapter features 2.5kV isolation to ensure 4 serial devices by DB-9 port connected...
Part No. CM-422485-i4 | View Details

$199.99
USB-8COMi-M USB to 8X DB-9 Port RS-422/485 Metal case with DIN-Rail
Features :

USB-8COMi-M USB to RS-422/485 Adapter connectivity through a Single USB adding up to eight serial port converters with DB9 (9-pin male) connectors, metal housing. (RS-422/RS-485)

Feature...
Part No. USB-8COMi-M | View Details

$249.78
USB to Quad Opto-isolated RS-422/485 Adapter
Features :

l USB to Quad Opto-isolated RS-422/485 Adapter

  • with optical isolation (2000V) (USB-4COMi-SI)
  • with surge protection (25KV ESD)of all signal lines to prevent interference...
    Part No. USB-4COMi-SI | View Details
$279.98
USB-4COMi-SI-M USB to Quad RS-422/485 Metal case with DIN-Rail
Features :

USB-4COMi-SI-M USB to Quad RS-422/485 Adapter (with Optical Isolation & Surge Protection)

The USB-4COMi-SI-M USB to Optical isolated Quad RS-422/485 Serial Adapter is designed to make...
Part No. USB-4COMi-SI-M | View Details

$294.78

usb serial adapter from $19.95 only at serial adapter source www.USBSERIAL.com