will this device work on linux ubuntu?

As an FTDI-based serial adapter, this works just fine under Ubuntu and most other linux distributions as the drivers have been included in the linux kernel since version 2.6.

Will driver work in Windows 8.1 / 10? Using it for RS422 TXA- (1)TXB+ (2) / RXA- (6) RXB+ (7)?

I don't know. I used this device in a development project for a client. I used it with Cygwin on a Windows 7 system and on a RS485 bus to which I had attached multiple devices. It worked flawlessly in this respect. No clue about RS422 or later Windows releases.

I need for a 2 wire PTZ security camera, what will work that has a usb connection? This is driving me crazy. PLEASE HELP

This unit is ONLY for USB to RS-485 connection, however, it will handle a 2 wire connection. I'm not sure what drivers a PTZ camera needs, but you should be able to find them on their website.

Can I use 2 of these converters on one Windows 7 computer (using two separate USB ports) to do a loop back test?

I haven't done it myself, but it should work fine. I have one of these. Once installed, the device appears to Windows 7 as a serial port device. If you install two of them, they will appear as two separate serial ports.You just need to make sure to wire them up appropriately.

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USB to RS-485/422 Serial Adapter with FTDI Chipset, LED Indicators, 5ft Cable, ESD Protection, Supports Windows 11/10/8.1/8/7, Linux, MacOS X 10.6 and Above

USB to RS-485/422 Serial Adapter with FTDI Chipset, LED Indicators, 5ft Cable, ESD Protection, Supports Windows 11/10/8.1/8/7, Linux, MacOS X 10.6 and Above

Product ID: 78706845

Details

Brand
Gearmo
Color
Blue
Connector Type
Serial DB9 w/
Specific Uses For Product
Connecting to

⚡600W surge & 15kV ESD protection

💻FTDI chipset ensures cross-platform compatibility

🔌5ft cable length for flexible setups

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€ 50.67

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Description

⚙️ Legacy Tech Meets Modern Mastery — Stay Connected, Stay Ahead!

PLUG PLAY POWERHOUSE - Seamlessly connect legacy DB9 serial devices to any modern USB port with a robust 5ft cable—no adapters, no hassle.
UNIVERSAL COMPATIBILITY - Engineered with the trusted FTDI chipset, it flawlessly supports Windows 7 through 11, Linux, and macOS 10.6+, bridging old tech with new effortlessly.
INDUSTRIAL GRADE DURABILITY - Built to withstand 600W surge and 15kV ESD isolation, ensuring your critical operations never skip a beat.
TRUSTED AMERICAN ENGINEERING - Backed by over a decade of Gearmo’s precision manufacturing and dedicated engineering support, your projects get the reliability they deserve.
REAL TIME CONNECTION FEEDBACK - Integrated LED indicators for Power, TX, and RX let you instantly verify communication status—because downtime is not an option.

The Gearmo USB to RS-485/422 Serial Adapter is a professional-grade connectivity solution featuring a 5ft cable, industrial surge and ESD protection, and an FTDI chipset for broad OS compatibility. Designed for seamless integration of legacy serial devices into modern USB systems, it offers real-time LED diagnostics and is backed by 10+ years of trusted American engineering.

Specifications

ASIN	B005CPLOVW
Best Sellers Rank	#96 in Serial Adapters
Brand	Gearmo
Color	Blue
Compatible Devices	Devices with DB9 female serial connectors such as printers, scanners, modems, CNC machines, PLCs, and other legacy serial equipment Compatible Devices Devices with DB9 female serial connectors such as printers, scanners, modems, CNC machines, PLCs, and other legacy serial equipment See more
Connector Type	Serial DB9 Male w/ Hex Nuts, USB Type A
Customer Reviews	4.6 out of 5 stars 100 Reviews
Input Voltage	5.7 Volts (DC)
Item Weight	0.15 Pounds
Manufacturer	Gearmo
Mfr Part Number	US-485422
Model Number	US-485422
Number of Items	1
Number of Ports	2
Package Quantity	1
Power Plug Type	No Plug
Smart Home Compatibility	Not Smart Home Compatible
Specific Uses For Product	Connecting legacy serial devices to modern USB host systems
UPC	729440692384
Unit Count	1.0 Count
Warranty Description	1 Year
Warranty Type	1 Year

Reviews

A**R

27.01.2024

P**E

24.02.2013

A**R

5.01.2014

K**M

2.03.2013

C**®

3.01.2013

C**N

15.09.2025

W**R

4.10.2018

A**R

6.11.2013

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Sold byAmazon ItalyDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Italy.

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