Tripp Lite 4 Port USB to Serial Adapter, RS-422/RS-485, FTDI with COM Retention
Modern computers rarely carry dedicated serial ports, yet field hardware still relies on them. We built this adapter to bridge that gap on a single USB line, letting you connect scanners, modems and sensors without adding expansion cards. It runs on bus power directly from your machine.
Price as our retail partner last listed it. They set it and they can change it, so the figure on their page is the one that counts at checkout.
- 4-Port USB to Serial converter: this USB to Serial converter turns your computer's USB port into four DB9 ports capable of connecting RS-422 and RS-485 Serial devices, such as modems, handheld scanners and GPS systems. No external power source is needed.
- Independent dip switches: the u208-004-ind’s Serial ports can be set to automatically detect an RS-422 or rs-485 device by adjusting their dip switch settings.
- Compatibility: the wall-mountable USB to Serial converter USB-powered, so no bulky or obtrusive external power supply is required. System requirements include 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. Perfect for activating surveillance cameras, access panels and other security equipment.
How this one is built
Serial device connection
The adapter links multiple legacy serial peripherals back to your workstation through one upstream USB line. It talks directly to handheld barcode readers, GPS units and industrial security hardware without requiring changes to your existing terminal cabling.
Dip switch configuration
Individual switches let you assign each serial interface to match the connected device type. You set the mode mechanically for each line, so the hardware recognizes the proper communication protocol as soon as you plug the equipment in.
Bus powered operation
Your computer feeds operating power directly through the upstream USB link. There is no external wall transformer to route around an outlet strip or wedge into a crowded conduit, which keeps the immediate work surface free of clutter.
Surface mounting options
The casing is built to screw straight against a flat panel, wall or bench frame. It anchors firmly where technicians need to patch test gear, keeping the wiring harness stable under repeated physical adjustments and terminal swaps.
On the nameplate
These are the figures our retail partner lists for this unit. Where a number is missing here it was not printed on the listing, and we would rather leave the row out than fill it with a guess.
| Connector | USB Type B |
|---|---|
| Color | Black |
| Weight | 9.92 ounces |
| Warranty | 2-year limited warranty |
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