USB to Serial Adapters

Gearmo 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 37 resultsSorted by popularity

2-Port Professional RS-232 USB 2.0 to Serial Adapter 5ft.
Rated 5.00 out of 5
$40.99
Available on backorder
5ft. USB 2.0 RS-232 Serial Adapter with LED Indicators
Rated 4.87 out of 5
$29.29
In stock
USB to RS-422/485 Converter FTDI CHIP w/ Terminals
Rated 5.00 out of 5
$40.29
In stock
4 Port Professional RS-232 USB 2.0 to Serial Adapter
Rated 4.85 out of 5
$63.99
In stock
PRO Single Port USB to Serial Adapter with Activity LED 3ft.
Rated 4.71 out of 5
$28.99
In stock
12in. USB 2.0 RS-232 Serial Adapter FTDI Chip 920K with Tx/Rx LED
Rated 4.89 out of 5
$22.99
In stock
USB to RS-232 Serial Adapter DB9 – 8 Inch Short Cable
Rated 5.00 out of 5
$22.99
In stock
Pro 5ft. USB to RS-422 / RS-485 Converter w/FTDI Chip
Rated 4.79 out of 5
$45.29
In stock
USB-C 2.0 to Serial RS-232 16 Inch Adapter w/ LED Indicators
Rated 5.00 out of 5
$39.29
In stock
USB 2.0 RS-232 Serial Adapter 16 Inches w/ LED Indicators
Rated 4.78 out of 5
$28.29
In stock
USB to RS232 Serial Adapter 3ft. Cable
Rated 4.86 out of 5
$28.99
In stock
Mini USB to Serial Adapter Hi-Speed 920K FTDI Chip
Rated 4.88 out of 5
$21.99
In stock
2 Port USB to Serial adapter with RX/TX LED Indicators
Rated 4.00 out of 5
$46.29
Available on backorder
USB to RS485 | RS422 Optically Isolated Industrial Serial Adapter
$86.29
In stock
USB Serial RS232 Single Port PRO Adapter with Activity LED 3ft
$31.99
In stock
USB Serial – USB 2.0 RS232 Adapter with LED Indicators
Rated 4.67 out of 5
$34.29
In stock
4 Port Professional RS-232 USB 2.0 to Serial Adapter w/Nuts
$52.99
In stock
USB-C 2.0 to Serial RS-232 Adapter w/ LED Indicators
Rated 5.00 out of 5
$40.29
In stock
Gearmo USB 8 Port Serial RS232 featuring FTDI Chipset with LED Indicators
$139.99
In stock
4 Port USB To Serial Adapter with RX/TX Indicators
Rated 5.00 out of 5
$69.29
In stock
4 Port Serial RS-232 Hub w/ FTDI Chipset & RX/TX LED Indicators
$103.99
In stock
Mini RS-232 to RS-485 Converter
$15.29
In stock
Industrial RS-232 to RS-422 Converter with Terminal Block
$28.99
In stock
2 Port USB Type-C To Serial Adapter w/ Per Port Rx / TX Status LED Matrix
$46.29
In stock
Gearmo USB 2 Port Serial Adapter RS232 featuring FTDI Chipset with LED Indicators
$64.29
Available on backorder
RS-232 to RS-485/422 Port-Powered w/Optical Isolation
$40.49
In stock
USB Serial 12 Inch RS232 Serial Adapter FTDI Chip with LED
$28.99
Available on backorder
1 Port USB to Serial RS-232 Hub w/ FTDI Chipset & LED Indicators – Rugged Metal Housing Ideal for Mounting
$43.49
In stock
DB9 RS-232 5 Bits Optoelectronic Isolated Converter 2,500Vrms
$17.99
In stock
4 Port USB Type-C To Serial Adapter with Per port LED Rx / TX Indicators
Rated 5.00 out of 5
$58.29
In stock
2-Port USB 3.2 Gen 1 Industrial Surface & DIN-Rail Mount Hub w/ Gigabit Ethernet & DB9 Serial FTDI Chipset
$106.49
In stock
RS-232 to TTL Converter 5V output
$26.49
In stock
Industrial RS-232 to RS-485 Converter
$22.99
In stock
RS-232 to RS-485/422 Converter with Lightning Surge Protection
$40.49
In stock
RS-232 Optical Isolated Line Booster 2,500Vrms
$38.99
Out of stock
RS-232 to RS-485 Converter with Isolation 2,500Vrms
$27.29
In stock
RS-232 to RS-232 Mini Port-Powered Isolator
$28.99
Out of stock