Gearmo - USB to Serial RS-232 Adapter with LED Indicators, FTDI Chipset, Supports Windows 11/10/8.1/8/7, Mac OS X 10.6 and Above - Blue
About this product
The GM-FTDI-LED USB to RS-232 Serial Adapter is the quick and easy fix for computers that no longer include legacy serial ports. Whether you're connecting to printers, scanners, CNC machines, PLC controllers or industrial gear, this adapter ensures full RS-232 signal support and smooth operation. It’s powered directly from your USB port, so no extra power supply is needed, and it features color LED indicators that flash with activity to give you real-time feedback on your connection. With an integrated 5 foot cable and support for Windows 7 through 11, macOS, and Linux, it's plug & play ready for your setup.
Features
USB to serial connectivity made easy
Connect your legacy DB-9 serial devices to modern USB ports with this USB to RS-232 adapter. Ideal for point-of-sale, lab, industrial, or testing use.
Built-in signal tester with LED indicators
Quickly test RS-232 connections with clear dual-color LED indicators to save time and troubleshoot with confidence.
Fast and stable data transfers
Transfer data at speeds up to 921.6Kbps, perfect for high-performance tasks from automation systems to data logging and more.
Convenient 5 foot cable length
The Integrated 5 foot cable length makes it easy to connect devices in tighter spaces or hard-to-reach ports.
Broad OS compatibility
Works seamlessly with Windows 7 through Windows 11, macOS, and Linux.
Specifications
- Connector Type (End 1)USB-AConnector Type (End 2)D-Sub (DB-9)
Reviews
Rating 5 out of 5 stars with 1 review
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
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The GM-FTDI-LED USB to RS-232 Serial Adapter is the quick and easy fix for computers that no longer include legacy serial ports. Whether you're connecting to printers, scanners, CNC machines, PLC controllers or industrial gear, this adapter ensures full RS-232 signal support and smooth operation. It’s powered directly from your USB port, so no extra power supply is needed, and it features color LED indicators that flash with activity to give you real-time feedback on your connection. With an integrated 5 foot cable and support for Windows 7 through 11, macOS, and Linux, it's plug & play ready for your setup.

This Insignia NS-PU99501 cable allows you to connect a device with an RS-232 (DB9) serial port to a USB hub or USB-equipped PC or Mac and supports data transfer rates of more than 115 Kbps for rapid performance.

The GM-FTDI2-LED is a USB 2.0 to RS-232 adapter that makes it simple to add a serial port to computers without built-in COM support. Powered directly through a USB Type-A connection, this compact adapter delivers reliable RS-232 connectivity with data rates over 1Mbps and full backward compatibility with USB 1.1. Built with a trusted FTDI chipset, it ensures stable performance across Windows, macOS, and Linux systems. LED indicators flash during connection activity, giving you real-time status monitoring for pins and signals. With 15kV ESD protection, plug-and-play installation, and support for serial devices like printers, modems, CNS machines, PLCs, radios, and other industrial equipment, the GM-FTDI2-LED is a dependable and easy-to-use solution for serial communication.

The GM-485422 USB to RS422/485 Adapter is a professional grade solution for stable, high-speed serial communication, built around a reliable FTDI processor and SP485E transceiver. Supporting baud rates from 300bps to 921.6Kbps, it automatically detects signal rates for smooth performance across a wide range of devices. Designed for industrial, commercial, and office applications, it features asynchronous operation, half-duplex support, and the flexibility to connect point-to-point or multi-point setups. LED indicators for Power, TX, and RX provide instant status feedback, while built-in 15kV static and 600W surge protection ensures durability and device safety. With plug-and-play convenience, no external power supply required, and a 5 foot USB cable plus terminal block included, this compact adapter delivers zero-delay transmission and dependable performance on Windows, macOS, and Linux systems.
| Pros for Gearmo - USB to Serial RS-232 Adapter with LED Indicators, FTDI Chipset, Supports Windows 11/10/8.1/8/7, Mac OS X 10.6 and Above - Blue | |||
|---|---|---|---|
| There were no pros for this product— | Overall Performance, Compatibility, USB, Ease of use, Price | There were no pros for this product— | There were no pros for this product— |
| Cons for Gearmo - USB to Serial RS-232 Adapter with LED Indicators, FTDI Chipset, Supports Windows 11/10/8.1/8/7, Mac OS X 10.6 and Above - Blue | |||
| There were no cons for this product— | Cable Length | There were no cons for this product— | There were no cons for this product— |
Specs
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