Does this product work with RS-422 signals?

Nope. RS-232 only. Great product if you want four RS-232 ports on your computer, but won’t help you with handling RS-422.

Is there any update about Windows 10 compatibility?

Works just fine on Windows 10. If your computer has internet access, just plug it in, the latest drivers are available from Windows Update and Windows 10 will find them on its own (with internet access). Otherwise, check the manufacture's site, there is an .exe installer there.

For use connecting to console ports on computers or switches or such, are gender-bending and/or null modem adapters required?

The way this USB to RS232 serial adapter is being used by me is to connect it to a computer that has only USB ports and no RS232 serial ports. The four DB9 (male) connectors of the adapter are then connected to serial devices, either directly or with a RS232 serial cable (not a crossover/null modem cable) to my devices that require a RS232 serial connection to my computer. In general, if the device to which this adapter is being connected requires a female DB9 connector on the attaching cable, then a gender changer would be required. If the serial device to which the adapter is going to be connected requires a crossover/null modem serial connection, then a crossover cable/null modem adapter would be required. The answer to this question will depend on what is required by the device to which this adapter will be connected assuming the connection to a computer USB port and adapter drivers are installed correctly.

What is the voltage on the Tx pin (pin 3)?

-5.7V for logic high, +4.2V for logic low, measuring from pin 3 to pin 5.

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Gearmo 4 Port USB to Serial FTDI Cable for MA PC Linux with Windows 10 Certified Drivers

Product ID: 312631518

Details

Colour
Black
Compatible devices
Personal
Connector type
USB
Item dimensions L x W x H
91.4 x 3.8 x
Specific uses for product
PC

⚡921.6Kbps max baud rate

💻Cross-platform OS support

🔌4 USB to RS-232 ports

€ 118.47

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔗 Legacy meets modern: Power your serial devices with seamless USB connectivity!

QUAD PORT POWERHOUSE - Connect 4 legacy serial devices simultaneously with a single USB cable—streamline your workspace effortlessly.
PLUG PLAY SIMPLICITY - Zero hassle installation—no IRQ or DMA conflicts, just connect and get to work instantly.
UNIVERSAL COMPATIBILITY - Seamlessly integrates with Windows, Linux, and macOS—future-proof your multi-OS environment.
BLAZING FAST DATA TRANSFER - Experience ultra-reliable communication with speeds up to 921,600 bps—no lag, no bottlenecks.
BUILT FOR INDUSTRY LEADERS - Backed by 10+ years of US engineering excellence and surge protection up to 15kV—trust your mission-critical gear.

The Gearmo 4 Port USB to Serial FTDI Cable is a robust, plug-and-play adapter that converts a single USB port into four RS-232 serial ports. Featuring a high-performance FTDI chipset, it supports baud rates up to 921,600 bps and offers broad compatibility across Windows, Linux, and macOS platforms. Designed for professionals needing reliable connections for POS systems, industrial controls, and legacy devices, it includes surge protection and requires no external power, making it an essential tool for modern multi-device setups.

Specifications

ASIN	B004ETDC8K
Best Sellers Rank	#136,941 in Computers ( See Top 100 in Computers ) #216 in Serial Cables
Brand	Gearmo
Color	Black
Compatible Devices	Personal Computer
Connector Type	USB
Customer Reviews	4.6 4.6 out of 5 stars (216)
Global Trade Identification Number	00729440626044
Item Dimensions	91.4 x 3.8 x 1.3 centimeters
Item Weight	0.39 Pounds
Manufacturer	GearMo
Mfr Part Number	USA-FTDI4X
Model Number	USA-FTDI4X
Number of Ports	4
Package Quantity	1
Power Plug Type	No Plug
Smart Home Compatibility	Not Smart Home Compatible
Specific Uses For Product	PC
UPC	729440626044
Unit Count	1.0 Count

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€ 118.47

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered 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 Croatia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

View all Trustpilot reviews