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 1–12 of 31 results

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

    $19.95
  • 2-Port USB 2.0 to RS232 converter cable

    2 Port Pro USB 2.0 to Serial Converter, TX/RX LED COM Retention
    Model #: USA-FTDI2X

    $34.95
  • Sale!

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

    $99.95 $68.88
  • DB9 RS-232 5 Bits Optoelectronic Isolated Converter 2,500Vrms
    Model #: GM-1015-B

    $14.99
  • Gearmo USB 2 Port Serial RS232 featuring FTDI Chipset with LED Indicators
    Model #: GM-FTDI2X-M

    $54.95
  • Gearmo USB 4 Port Serial RS232 featuring FTDI Chipset with RX/TX LED Indicators, Industrial Version
    Model #: GM-FTDI4X-M

    $89.95
  • Gearmo USB 8 Port Serial RS232 featuring FTDI Chipset with LED Indicators Industrial Version
    Model #: GM-FTDI8X-M

    $119.95
  • Industrial RS-232 to RS-422 Converter with Terminal Block
    Model #: GM-1005A-B

    $24.99
  • Industrial RS-232 to RS-485 Converter
    Model #: GM-1004E-B

    $19.99
  • Mini RS-232 to RS-485 Converter
    Model #: GM-10211-B

    $12.99
  • Mini USB to Serial Adapter Hi-Speed 920K FTDI Chip
    Model #: SERIAL-B

    $18.95
  • Pro 5ft. USB to RS485-RS422 Converter w/FTDI Chip
    Model #: US-485422

    $39.95