Serial

USB C to SerialGearmo provides USB to Serial COM port adapters for RS232 | RS422 | RS485 protocols. Our USB to serial adapters cover all the bases from mini serial adapters, serial cable adapters, and metal USB serial adapters that are mountable. Looking for USB serial adapters with LED indicators? We offer many adapters that show TX and RX signals and more for diagnostics and activity.

Showing all 36 results

  • 12 Inch USB to RS232 Serial Adapter FTDI Chip 920K with LED
    Model #: GM-FTDI-A12

    $21.95
  • 2-Port USB 2.0 to RS232 converter cable

    2 Port Professional RS-232 USB 2.0 to Serial Adapter
    Model #: USA-FTDI2X

    $38.95
  • 2 Port USB to Serial adapter with RX/TX LED Indicators
    Model #: GM-FTDI2X-LED

    $43.95
  • 2 Port USB Type-C To Serial Adapter with Per Port Rx / TX Status LED Matrix
    Model #: GM-FTDI2XC-LED

    $43.95
  • 4 Port Professional RS-232 USB 2.0 to Serial Adapter
    Model #: USA-FTDI4X

    $60.95
  • USA-FTDI4x-Nut Full Image

    4 Port Professional RS-232 USB 2.0 to Serial Adapter w/Nuts
    Model #: USA-FTDI4X-NUT

    $49.99
  • 4 Port USB To Serial Adapter with RX/TX Indicators
    Model #: GM-FTDI4X-LED

    $65.95
  • Sale!

    4 Port USB to Serial DB9 Industrial RS232 Adapter 15KV ESD and Surge
    Model #: GM-U24RS232

    $75.95
  • 4 Port USB Type-C To Serial Adapter with Per port LED Rx / TX Indicators
    Model #: GM-FTDI4XC-LED

    $54.95
  • DB9 RS-232 5 Bits Optoelectronic Isolated Converter 2,500Vrms
    Model #: GM-1015-B

    $16.95
  • Gearmo USB 2 Port Serial RS232 featuring FTDI Chipset with LED Indicators
    Model #: GM-FTDI2X-M

    $60.95
  • Gearmo USB 4 Port Serial RS232 featuring FTDI Chipset with RX/TX LED Indicators
    Model #: GM-FTDI4X-M

    $98.95
  • Gearmo USB 8 Port Serial RS232 featuring FTDI Chipset with LED Indicators
    Model #: GM-FTDI8X-M

    $131.95
  • Industrial RS-232 to RS-422 Converter with Terminal Block
    Model #: GM-1005A-B

    $27.95
  • Industrial RS-232 to RS-485 Converter
    Model #: GM-1004E-B

    $21.95
  • Mini RS-232 to RS-485 Converter
    Model #: GM-10211-B

    $14.95
  • Mini USB to Serial Adapter Hi-Speed 920K FTDI Chip
    Model #: SERIAL-B

    $20.95
  • Pro 5ft. USB to RS485-RS422 Converter w/FTDI Chip
    Model #: US-485422

    $43.95
  • PRO Single Port USB to Serial Adapter with Activity LED 3ft
    Model #: USA-FTDI-A36

    $27.95
  • RS-232 Optical Isolated Line Booster 2,500Vrms
    Model #: GM-1012-B

    $36.95
  • RS-232 to RS-232 Mini Port-Powered Isolator
    Model #: GM-1011-B

    $27.95
  • RS-232 to RS-485 Converter with Isolation 2,500Vrms
    Model #: GM-10017-B

    $25.95
  • RS-232 to RS-485/422 Converter with Lightning Surge Protection
    Model #: GM-1042E-B

    $38.95
  • RS-232 to RS-485/422 Port-Powered w/Optical Isolation
    Model #: GM-10127-B

    $38.95
  • RS-232 to TTL Converter 5V output
    Model #: GM-1010-B

    $25.95
  • 16 inch USB to Serial FTDI RS232 Adapter

    USB 2.0 RS-232 Serial Adapter 16 Inches with LED Indicators
    Model #: GM-FTDI-LED16

    $26.95
  • USB 2.0 RS-232 Serial Adapter with LED Indicators
    Model #: FTDI-LED

    $27.95
  • USB C to Serial RS232 16 Inch Adapter with LED Indicators USB 2.0
    Model #: GM-FTDI2-LED16-C

    $37.95
  • USB C to Serial RS232 Adapter with LED Indicators USB 2.0
    Model #: GM-FTDI2-LED-C

    $38.95
  • GM-FTDI2-LED USB Serial Adapter

    USB Serial – USB 2.0 RS232 Adapter with LED Indicators
    Model #: GM-FTDI2-LED

    $32.95
  • USB Serial 12 Inch RS232 Serial Adapter FTDI Chip with LED
    Model #: GM-FTDI2-A12

    $27.95
  • USB Serial RS232 Single Port PRO Adapter with Activity LED 3ft
    Model #: GM-FTDI2-A36

    $30.95
  • USB to RS-232 Serial Adapter DB9 – 8 Inch Short Cable
    Model #: USA-FTDI-8

    $21.95
  • USB to RS232 Serial Adapter Cable 3ft.

    USB to RS232 Serial Adapter 3ft. Cable
    Model #: USA-FTDI-36

    $27.95
  • Example of USB to Terminal Block connector adapter

    USB to RS485 / RS422 Converter FTDI CHIP with Terminals
    Model #: USA-482422

    $38.95
  • USB to RS485 RS422 Optically Isolated Serial Adapter

    USB to RS485 | RS422 Optically Isolated Industrial Serial Adapter
    Model #: US-422i

    $82.95