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4-Port USB to RS232 Adapter FTDI Cable

Model No. CG-4X232FTDI

RS-232 | FTDI

Expand Your Serial Capabilities: Connect your legacy 9-pin serial devices through a USB-A port to add legacy functionality to newer technologies with no serial port connections. Perfect for retail applications — point of sale systems, scanners, printers, and more.
Plug-&-Play: The adapter’s power is drawn from a USB connection for ease of access and is compatible with Windows (up to Win 11), Mac OS, and Linux.
COM Retention: COM Ports are fully configurable, and after reboots, port assignments are preserved.
Upstream: 1 USB port, Type A Male Connector
Downstream: 4 Male DB9s, w/ nuts

$103.99

Model No. CG-4X232FTDI

In stock

Need some help? Contact us.

Product Documents

Software & Drivers

FTDI Driver

Quick Links:

Description

Introduction:

The CG-4X232FTDI 4-Port USB to RS232 Adapter FTDI Cable is 7ft in length and engineered for retail POS (Point Of Sale) terminals at sales counters such as those in banks and grocery stores. They are essentially a PC in a custom case attached to printers, scanners and displays ready for data. Some of the peripherals are integrated into the POS terminal, such as the keyboard, cash drawer, simple pole display and receipt printer. Others are external to the terminal such as scales, large flat panel pole displays, credit card readers, and bar code scanners. This serial adapter is supported by Windows 11.

This PRO Grade 4-Port USB to RS232 Adapter is build around FT4232H from FTDI Semiconductors which is the best and most reliable Quad Serial to USB processors on the market, it also uses ZT232E RS232 transceiver from ZyWyn USA. USB cable is 6ft. total length with port identification marks on each of the DB-9 Male ends.

The upstream (USB type B connector) port supports USB 2.0 High-Speed mode to prevent from the bottleneck when all serial ports are transferring data simultaneously.

4 port FTDI serial adapter circuit

The CG-4X232FTDI 4-Port USB to RS232 Adapter Cable provides the scalability to quickly adapt to new USB technologies. Multiple modules can be added to a single USB interface allowing you to add RS232 connectivity as needed. Complete product line offers many choices to help you to expand and make your network grow with your requirements.

With the USB Plug-and-Play feature, simply plug in, follow the instructions of Install Wizard, then you are done. You don’t have to deal with Card Slots, I/O address, IRQ jumpers, DMA and others when you are connecting the devices. The System will recognize the device and install the drivers automatically. The CG-4X232FTDI is an ideal solution for your expanding applications.

Features:

7ft. cable length
Provides 4 RS232 Serial Ports over USB 2.0 Port
USB 2.0 High Speed (480Mbits/Second) and Full Speed (12Mbits/Second) compatible
Provides 4 DB9 Connectors with Octopus Cable
Supports Wall Mounting Kit and Optional DIN RAIL Clips
Baud Rate up to 921.6Kbps
Supports 7,8 Data Bits
Odd, Even, Mark, Space, or None parity mode
Supports 1, or 2 Stop Bits
Powered by USB Bus Power, no AC Adapter Required
Supported by Windows 11

USB 2.0 Port

USB 2.0 High Speed (480Mbits/Second) and Full Speed (12Mbits/Second) compatible, backward compatible with USB 1.0 and USB 1.1, the USB connector equips the Screw Lock Mechanism

Serial Ports

Supports 4 DB9-Male UART Serial ports, the key benefits are:
Data Rate up to 921.6Kbps
Supports 7,8 Data Bits
Odd, Even, Mark, Space, or None parity mode
Supports 1 or 2 Stop Bits
Supports Wall Mounting Kit and Optional DIN RAIL Mounting Clips

OS Support

Windows 7, 8, 10, and Windows 11
Linux and Mac OS 10.X

Power Requirements

Environmental:

Operating Temp.: 0 to 55C (32 to 131F)
Storage Temp: -20 to 85C (-4 to 185F)
Operating Humidity: 5 to 95% RH

Form Factor

2.36”(L)x1.66”(W)x0.98”(H) (6.00 x 4.24 x 2.51 cm)

Package Contents:

4 port USB to RS232 FTDI adapter
Mounting bracket
Driver Disc
Paper installation manual

*Surface Mounting Screws Not Included

Specifications

Product Specifications

Power

External Power Required

Compliance

Country of Origin

Taiwan

Physical Characteristics

Color	Black
Item Weight	0.77 lbs.
Length	7ft
Mounting Style	Surface Mount
Ports	4 Serial Ports
Material of Construction	Plastic

Serial Attributes

Serial Standards	RS232
Baud Rate	921.6K bps
Data Bits	7, 8
Parity	None, Even, Odd, Mark, Space
Stop Bits	1, 2
Flow Control	Hardware (RTS, CTS), XON/XOFF

Software

OS Support

Win 7, Win 8, Win 10, Win 11, Linux, Mac OSX

Environmental

Operating Temperature

0C to 55C

Product Information

Warranty

1 year from date of purchase

Hardware

Chipset	FTDI
Upstream USB Ports	1 Type-A Male USB

Other Data

Connector	DB9 Male w/ Nuts
USB Interface	USB 2.0
Chip Model	FT4232H, ZT232E
Weight	0.77 lbs
Dimensions	9 × 6.25 × 1.6 in

UPC: 729440691745

Pin-Out

DB9 RS-232 Pin-Outs

Support

Product Documentation & Drivers

Product Documents

Software & Drivers

FTDI Driver

Need drawings, CAD files, or other compliance documentation? Click HERE

Serial F.A.Q.

Product F.A.Q.

View frequently asked product questions below. For all serial troubleshooting, visit this page.
Still need help? Reach out!

Do these adapters require an external power supply?
Most of our single and dual-port models are USB bus-powered. High-density rackmount models (8-port+) feature integrated or external power supplies for maximum signal integrity.
What is the difference between an isolated and non-isolated serial adapter?
Isolated adapters use optical barriers to physically separate the electrical signals. This protects your computer from 2,500V surges and ground loops common in factory environments.
Can I use these adapters with Windows 11?
Yes, all Coolgear Serial adapters use modern FTDI or Silabs chipsets with WHQL-certified drivers for full Windows 11, Mac, and Linux support.
What is COM Port Retention and why do I need it?
COM Port Retention ensures that your assigned COM port number remains the same every time you plug in the adapter or reboot your PC. This prevents software communication errors and eliminates the need to manually reconfigure your application settings whenever hardware is moved.
How do I clean and reinstall my FTDI drivers?
View Answer
1. Download the CDM Uninstaller HERE.
  
  Extract the zip file, or open the “CDMuninstallerGUI.exe” utility.
  
  Leave the ‘Vendor ID’ set to 0403 and ‘Product ID’ set to 6001.
  
  Click Add.
  
  Click Remove Devices.
  
  Download the corresponding driver for your operating system and follow on-screen prompts. Windows Driver | MacOS Driver
Video tutorial here.
How can I change my device’s COM port?
View Answer
1. Click on Start and navigate to the Control Panel
  
  Locate and click on Device Manager
  
  Under “Ports (COM & LPT)” you will find your serial device titled “USB Serial Port” along with its current COM Port.
  
  Right click on “USB Serial Port” and click on Properties.
  
  Navigate to the “Port Settings” tab and click on “Advanced…”
  
  Once there, the “COM Port Number:” can be changed with a dropdown menu to select the port number.
  
  Click your desired port number (i.e. COM2) and click “OK”.
  
  Click “OK” once more.
  
  Your serial device is now assigned to your chosen COM Port.
How do I check to ensure the COM port is listed properly in Windows?
View Answer
To ensure your serial device is installed properly, complete the following:
1. Press Windows Key + R to open the Device Manager. Once Run comes up, type “devmgmt.msc” into the text field and press Enter.
2. Expand the section labeled, Ports (COM & LPT).
3. You should now see a COM number in brackets to the right of each port. If the device is installed properly, no exclamation points or question marks should be present next to the device.
I have everything hooked up, but nothing is functioning correctly.
View Answer
To rule out potential issues, quickly test your individual components to ensure that they are working correctly individually, and are not the source of the problem:
- Serial cables
- Serial ports
- Serial devices
Test your components by:
- Hook up the serial cable(s), serial port(s), and serial device(s) in a different setup to see if the issue stems from a particular component, or the setup as a whole.
- Replace the serial cable, port, or device within your setup to further troubleshoot the issue’s origin.
When testing cables:
- Test each cable individually.
- Use short cables when you are testing.
When testing serial ports and devices:
- Press the Windows key + R, in Run, type devmgmt.msc, and press Enter to open the Device Manager. You can then check to see if your device is listed under Ports (COM & LPT).
- Ensure that the COM port number is the correct number for the serial device and that the software being used to connect the computer to the serial device uses the correct COM port number.
- If the device is listed with an error, follow the instructions on the website to reinstall the drivers.
Serial communication is not functioning correctly, how can I tell if the problem caused by the adapter or my serial software application?

View Answer
Older serial communication applications make use of legacy hardware addresses, often incompatible with PCI, PCIe, and USB to Serial products. Contact the software provider to troubleshoot.
I am receiving an error when I try to install the drivers in Windows 8 64 bit.
View Answer
Driver Signature Enforcement in Windows 8 may need to be disabled in order to use various drivers. After disabling this feature, the driver will be allowed to install.

Note: You are required to restart your computer after disabling the Driver Signature Enforcement. Save all open work on your computer.

Disable driver signature enforcement:
1. Press the Windows key + C.
2. Click Settings > Change PC Settings.
3. In the left pane, click General.
4. In the right pane, under Advanced startup, click Restart now.
When your system restarts:
1. Click Troubleshoot > Advanced options > Startup Settings > Restart.
2. Press 7.
When your computer restarts, Driver Signature Enforcement will be disabled and you can install the drivers.