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Tripp Lite USB to Serial Adapter FTDI Chip RS-422/485 DB9

Name: Tripp Lite USB to Serial Adapter FTDI Chip RS-422/485 DB9
Brand: TRIPP LITE
SKU: B07GX897K6
Price: 30.6 USD
Availability: InStock
Rating: 4.4 (5 reviews)

4.4 (5 reviews)

Posted Jul 10, 2026Updated Jul 14, 2026

$30.60$63.94

52% OFFYou save $33.34

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In StockPrice changed 13d ago

Is this a good deal?

1 port: This USB to Serial converter turns your computer's USB port into a DB9 port capable of connecting RS-422 and RS-485 Serial devices, such as modems, handheld scanners and GPS systems. The wall-mountable USB to Serial converter with an industrial-grade Steel enclosure offers electrostatic discharge (end) protection to 15kV.
Easy port configuration: independent dip switch for easy port configuration. The cable auto-detects and auto-switches RS-422 and RS-485 devices. It also supports RS-485 auto-transceiver turn around with unique featured Atta hardware.
Com retention: This USB to RS-485 adapter with built-in fetid Chipset offers COM retention. It automatically reassigns the same COM port values to each port, so when the cable is disconnected or the system is rebooted, no additional configuration is needed.
Compatibility: No external power source is needed. Just connect the included USB cable between the U208-001-IND and your computer, and insert the included CD into your computer's CD drive in order to launch the driver. System requirements: Windows XP or later, Mac OS X 10.4 or later, Linux 2.6.31 or later, or a computer with an available USB port.

Great Deal

Save 51% on this industrial-grade USB to serial adapter. Converts USB to DB9 RS-422/485 with built-in FTDI chipset for reliable COM retention. Ideal for connecting modems, scanners, and GPS systems.

What we like

Built-in FTDI chipset for reliable COM retention
Industrial steel enclosure with 15kV ESD protection
Supports RS-422 and RS-485 auto-detection
No external power needed, bus-powered

Watch out for

Requires CD driver installation for initial setup
Only single port, not multi-port

Tip: Install drivers from Tripp Lite's website instead of the included CD for latest version.

Our Take

Best for: IT pros needing reliable RS-422/485 serial connectivity.

The Tripp Lite U208-001-IND is a rugged USB to serial adapter built for industrial environments. Its steel enclosure provides 15kV ESD protection, and the built-in FTDI chipset ensures reliable COM port retention across reboots. It automatically switches between RS-422 and RS-485, making it versatile for connecting modems, scanners, or GPS receivers. Setup requires a driver install from the included CD or online, but once configured, it works across Windows, Mac, and Linux. The single DB9 port may be a limitation for multi-device setups, but for dedicated connections, it's a solid choice. At 51% off, this adapter offers excellent value for professionals needing stable serial communication.

Price Analysis

At $32.00, this is 51% off the $65.71 list price and well below the 30-day average of $65.71. It matches the low end of its typical price range, making it an excellent time to buy.

Common Questions

Does it work with Windows 10?

Yes, it supports Windows XP and later, including Windows 10 and 11.

What is COM retention?

COM retention means the adapter assigns the same COM port number each time it is connected, so you do not need to reconfigure software after disconnecting or rebooting.

Is it hot-swappable?

Yes, it supports hot-swapping. You can plug and unplug it without powering down your computer, thanks to USB's plug-and-play capability.