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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 Compact Industrial USB to RS-232 w/ 1m Octopus Cable & DIN Rail

    Regular Price: $109.95

    Special Price $96.70

    4-Port RS-232 USB to serial adapter adds four industrial RS-232 serial ports by connecting to a USB host port and can be mounted to a Din rail conveniently for stable connections. it is compliant with USB 1.1/2.0 compatible Speed 480 Mbps, hi-speed USB and supports FIFO 128 byte transmit FIFO 384 receive FIFO. Learn More
  2. 4-Port USB DB-9 Serial Adapter Solution for Windows Operating Systems

    provides instant connectivity with modems, ISDN TAs, PDS, handheld & pocket PCs, digital cameras, POS, serial printers, etc. It is suitable for remote access, retail and industrial applications, data collection and other applications requiring a high speed serial communications port. Learn More
  3. USB 4-Port Serial Adapter / USB 2.0 Quad Port Serial DB-9 RS-232

    Windows 10 mountable 4-port serial cable adapter helps expand to four DB-9 connections from an available USB host port. The USB to serial adapter uses the FTDI FT232RL Chips, Mutli TT USB 2.0 GL852 Chip and ZT213LFEA Zywyn Corporation to achieve its high speed output. Learn More
  4. Professional Quad Port USB to Serial DB-9 RS-232 Adapter
    $98.95

    USB 2.0 quad port serial DB-9 RS-232 adapter box is designed to make serial port expansion quick and simple. It instantly adds four RS-232 serial communication ports to your system with no conflicts with FTDI Chipset Learn More
  5. 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
  6. 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
  7. 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
  8. 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
    Learn More
  9. 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
  10. 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

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