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🔗 Legacy Meets Modern: Connect Smarter, Work Faster
The Gearmo 4 Port RS232 to USB Adapter features an advanced FTDI chipset supporting automatic handshaking and full RS232 protocol compatibility. Designed for professionals managing legacy serial devices, it offers plug-and-play USB connectivity with dual-color RX/TX LEDs for easy diagnostics. Compatible with Windows, Linux, and MacOS, this compact, power-free adapter ensures robust, multi-device serial communication backed by over 20 years of trusted American engineering.











| ASIN | B08P24ZQ1B |
| Best Sellers Rank | #150 in Serial Adapters #9,730 in Computer Cables & Interconnects |
| Brand | Gearmo |
| Color | Black |
| Compatible Devices | Devices with RS-232 DB9 female serial ports such as printers, modems, CNS machines, PLCs, radios, etc. Compatible Devices Devices with RS-232 DB9 female serial ports such as printers, modems, CNS machines, PLCs, radios, etc. See more |
| Connector Type | DB9 RS-232 |
| Current Rating | 15 A |
| Customer Reviews | 4.9 out of 5 stars 13 Reviews |
| Input Voltage | 5 volts |
| Item Weight | 0.02 kg |
| Manufacturer | Gearmo |
| Mfr Part Number | GM-FTDI4X-LED |
| Model Number | GM-FTDI4X-LED |
| Number of Items | 1 |
| Number of Ports | 4 |
| Package Quantity | 1 |
| Power Plug Type | No Plug |
| Specific Uses For Product | Connecting legacy serial devices to host systems. |
| UPC | 045079162945 |
| Unit Count | 1 Count |
| Warranty Description | 1 Year |
| Warranty Type | Limited |
D**S
Nice usb to 4 serial port adapter
The device was easy to install. Started using it in just a couple minutes. I would buy another one if I need more ports.
F**R
It works great.
It also works great with linux operating system.
Trustpilot
3 weeks ago
2 weeks ago