4 Port USB to RS232 Serial Adapter with TX/RX LED

81 Reviews Add Your Review

$46.99

Connect 4 new or additional Windows COM ports through this FTDI, the USB to serial adapter outputs are automatically configured once connected to give you an easy plug-and-play installation.

Availability: In stock

Model Number: USA-FTDI4X

Documentation & Downloads

4-Port USB to Serial Adapter COM Retention FTDI Chipset 920K Baud Rate

$46.99

Details

Certified Windows FTDI 4 Port Serial Adapter

With this FTDI chip serial adapter you can easily add 4 standard serial ports to your desktop, laptop or other mobile device. Protection against ESD (Electro-Static Electricity), high voltage spikes and other dangerous voltage spikes which can damage your equipment or data signaling is accomplished by TVS's (Transient Voltage Suppressors), one for each data line.

This converter cable has protection against static electricity and electrical surges up to 15KV which gives you reliable data transfers and protects the converter and your equipment from damage due to over voltages. USB Plug-and-Play features allow easy installation and requires no IRQ, DMA, or I/O port resources, this means more devices can be attached to your system without the hassles of device and resource conflicts. Suitable for general office, commercial and industrial use.

4 Port USB to RS232 Serial Adapter Overall features

Easy Plug and Play installation
USB interface: standard Type A male
Automatic handshake support
Baud rates up to 921.600bps
No power supply needed
Dual 16 Byte hardware data buffer (up/down stream)
Cable Length 3 feet

RS232 Serial Adapter Overview

Serial outputs are automatically configured in your system as additional COM ports with Windows 7, 8, 8.1, 10 & Windows 11. The adapter is compatible with most GPS and PDA devices such as Garmin, Magellan, and Palm. The 4-Port Serial Adapter is also compatible with office equipment such as modems, printers, scanners, and digital cameras.

Just like most of our other converters this adapter is using the high quality FTDI chip which makes it fully compatible with all versions of Windows (7and Vista included), Linux and Mac.

Technical Specifications

UPC	729440626044
Manufacturer	Gearmo
Warranty	One Year
Country of Origin	China
Item Length (in)	8
Item Width (in)	6
Item Height (in)	2
LED Indicators	TX/RX
Connector(s)	DB9 Male w/ Screws, USB 2.0 Type A Male Fixed Cable
Downstream Port Count	4
Serial Modes	RS232
Chip Model	FTDI FT4232HL, ZT3234LFEY
OS Support / Compatibility	Windows 7, Windows 8, Windows 10, Windows 11, Mac OS
ESD Protection	15kV
Downstream Port Type	Male DB9 /w Screws
Upstream Port Count	1
Upstream Port Type	USB Type A Fixed Cable

Reviews (81)

Based on 81 reviews

5 stars: 68 reviews
4 stars: 10 reviews
3 stars: 2 reviews
2 stars: 1 review
1 star: 0 reviews

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You're reviewing: 4-Port USB to Serial Adapter COM Retention FTDI Chipset 920K Baud Rate

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Review

Quality

3.0 out of 5 stars Would be 5 stars except for this:

Review by Charles Darwin

The DB9 connector hardware doesn't have the needed nuts to allow one to use the thumbscrews from connecting a cable to the connector. In other words, this is fine if you have four devices with DB9 serial port connections right next to each other, but if you are like most people, and have perhaps an HF radio in one place, and an oscilloscope in another, and a GPS in another place, and want to use this serial adapter for all of them, you'll be needing separate DB9 M-F or DB9 to DB25 cables between that device and this adapter. Problem is, there's no way to securely screw that cable into the DB9 connectors of this adapter without purchasing the long nuts which are fastened to this adapter's thumb screws. This is a poor oversight in my opinion, and at this price, these nuts should have been included with the adapter. Otherwise, Windows 10 recognized and installed an OEM driver without issue - it didn't even need the CD which came with this adapter.

Quality

5.0 out of 5 stars Works on Linux

Review by trainboy

Am running Rocky 9.3 on a mobo that has no serial ports. Plug this adapter in to a USB 3.0 port and kernel USB xhci_hcd driver recognizes it immediately and configures /dev/ttyUSB0 - 3. Plugged in a legacy serial device (in this case, an old APC SmartUPS) and away it goes, talking just like it was a regular serial port. In other words, it just works. Right away. Nothing to configure. How often does that happen?

Quality

works well

Review by Benjamin Nemec

These do what they're supposed to do. All four com port show up. Work in Windows and Linux with existing drivers. Don't bother with the disk they include, I tossed them.

Quality

Plugged it in, loaded the driver, and it worked right out of the box

Review by Dave S.

Super easy to install and use. Inexpensive and much nicer than the array of single-channel USB-RS232 UART cables I had been using, and... it freed up more USB ports on my computer. Nice.

Quality

Exceeded my expectations

Review by joe

;This product is great for what I do in particular, my computer never blue screens.They are numbered at the plug itself so there is no guessing when you have to assemble and disassemble! 10-10 recommend for anyone who has to run multiple modules at once

Quality

It works very well for my job.

Review by Kindle Customer

Very well made and works for my job

Quality

USB to Serial Converter

Review by KenD

Product works find once you figure out how to download drivers. No written instructions included. A small DVD with multiple units listed and NO instructions on how to download the drivers to make the unit work. Eventually "clicked" on blue highlight in PDF file and it went to the Website and finally found the link to download. Nowhere that I could find in the PDF file instructions as to how to do this. Time consuming and frustrating. Very simple instructions in the PDF write up would certainly help.

Quality

USB to Serial Converter

Review by KenD

Quality

Worked as expected

Review by David Michael Murray

Easy to install and download the drivers with limited tech knowledge. Worked flawlessly.

Quality

Using physical COM ports instead of virtual COM ports

Review by Smalldog

Purchased this to use with PowerSDR and WSJT-X rather than fooling with virtual serial port programs since both programs are running on the same computer, also purchased a null modem adapter (female to female) and connected two of the cables together..Very easy solution albeit a little overkill, but leaves an additional two RS-232 ports for antenna/rotor control in the future, and probably a little cheaper than some of the "virtual" serial port options out there that accomplish the same thing.