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USB to Serial

USB to Serial Adapters supporting RS232, RS422, and RS485 signals from a USB serial interface, lower OS also supported. USBGear offers the USB to serial interface adapters in single or multiple ports and various configurations including cable length, RS232 TTL (terminal block), and style.

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  1. 4-Port USB to RS-232 w/ Optical-isolation, Surge Protection, Metal Case

    Optical isolation and surge protection are available on serial port and is individually optically isolated with 2000 volt DC optical isolation on 8 signal pins, GND is isolated by 5V DC-to-DC converter. The optical isolation protects your computer from spikes and surges. Learn More
  2. USB 2 to Industrial 4-Port RS232-422-485 Serial TB Adapter

    4 optically isolated and surge protected terminal block ports, the USB2-4COMi-TB USB to quad port industrial serial adapter is designed to make RS-422 and RS-485 serial port expansion quick and easy. Learn More
  3. USB 2.0 to 4-Port RS232-422-485 Serial TB Adapter Isolation | Surge
    $239.95

    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 you device(s) with optical Isolation, 15KV ESD. Learn More
  4. Industrial USB 4 Port Serial RS-232 adapter w/FTDI Chipset, COM Retention, RX/TX LED Indicators, DIN Rail Mount Bracket, & Surface Mounting Brackets
    $82.49

    Gearmo USB 4 Port Serial RS232 featuring FTDI Chipset with LED Indicators Industrial Version

    Learn More
  5. 4-Port USB to Serial Adapter COM Retention FTDI Chipset 920K Baud Rate
    $43.98

    Connect 4 new or additional Windows COM ports through this FTDI, the USB to serial adapter outputs are automatically configured once connected to give you an easy plug-and-play installation. Learn More
  6. 4 Port USB to RS485 High Speed Adapter w/12V DC Power Supply

    The USB to RS-485 adapter installs automatically once connected to a USB port. When a serial device is connected to it, it will check for a fail signal indicated by a RED LED. With many application uses, this USB to RS-485 serial adapter is mountable and includes an attached USB cable. Learn More
  7. 4 port RS232 to USB FTDI chip adapter w/ RX and TX Status LED
    $65.95

    4 Port USB To Serial Adapter with Rx / TX Indicators easily adds 4 standard serial ports to your desktop, laptop or other mobile device and fully supports Windows 11.

    • RXD, TXD Status LED Array
    • Easy Plug and Play installation
    • USB interface: standard Type A female
    • Baud rates up to 921.600bps
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  8. USB Type-C 4-Port Serial Adapter

    4 Port USB-C to Serial adapter with RX/TX LED Indicators easily adds 4 standard serial ports to your desktop, laptop or other mobile device and fully supports Windows 11.

    • RXD, TXD Status LED Array
    • Easy Plug and Play installation
    • USB interface: standard Type-C female
    • Baud rates up to 921.600bps
    Learn More
  9. USB to serial 4 Port DB-9 RS-232 Adapter with FTDI Chip

    USB bay docking USBG-BAY4 serial adapter box supports Windows 7 and Vista (32 and 64-Bit) RS232 Port X 4 feature a rugged metal enclosure! Multiple modules can be added to a single USB interface allowing you to add RS232 connectivity as needed. Learn More
  10. 4-Port DB-9 RS232 to USB Adapter with Isolation and Surge Protection
    $249.99

    4-x port RS232 to USB adapter with isolation and surge protection each serial ports offer data transfer rate up to 920 Kbps for high system performance. Users are able to connect multiple serial devices through one USB port on their system. Learn More

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