4 Port USB to Serial Adapter RS-232 with FTDI Chip

FTDI USB RS232 DB9 Port Adapter

The USBG-4FTDI-B 4-Port USB to Serial RS-232 Adapter for newer computers and laptops that no longer include host serial port connection. Supports 4 new serial DB-9 connected devices through a host USB port to act as a portable Serial Bus.

  • Adds 4 RS-232 serial ports with Wake management functionality.
  • Connects legacy devices to computers without native serial ports.
  • Supports optional power input for high power consumption devices.
  • Supports 4 DB-9 Male ports with hex nut secure connections.


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Model No. USBG-4FTDI

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This 4-Port USB to Serial RS-232 Adapter provides an external Plug-and-Play solution to add up to four RS-232 serial devices to a USB-Enabled computer. Many newer computers, particularly laptop computers and handheld devices, no longer include the legacy serial ports, and desktop computers have reduced the number of serial ports supported. This serial adapter is supported by Windows 10.

4 Port USB to Serial Adapter Type-B Upstream Port

Users with serial devices may find themselves unable to communicate with installed equipment. The 4-Port USB to Serial Adapter is a great solution for connecting those legacy devices to a new computer. The four DB-9 serial ports ensure you’ll have the connections you need, when you need them. The USB to Serial Adapter can be conveniently powered by the external power adapter (not-included) or by USB bus power without the need for an external power supply. Energy-saving USB suspend-and-resume features are supported.

4 Port USB to Serial Adapter with cable and disk image


Additional Features & Specifications:

  • Serial Interface: RS-232
  • Data rate speed range: 300 bps to 230,400 bps
  • Free your computer’s RS-232 port for other uses
  • Aluminum housing provides a robust solution
  • Supports automatic handshake mode
  • Supports remote wakeup and power management
  • Data Transfer Speed: 12/1.5 Mbps USB 1.1 compliant
  • Supported by Windows 10


  • Input: One USB Type B Female
  • Output: Four DB-9 Male Maximum Speed 230K per port.
  • Power Mode: Bus Powered or External Power Adapter
  • Cable Length: 1.8m

System Requirements:

  • A PC running Windows 98SE, ME, 2000, XP, or Vista, Windows 7 or 8, and 10
    Mac OS-8.6 and higher, or Linux USB-enabled computer.

Package Contents:

  • SerialStuff 4-Port USB to Serial RS-232 Adapter
  • 3ft. USB A to B Cable User’s Manual (on CD)

Product Specifications



Serial Attributes
Serial Standards


Serial Ports





4 Serial Ports

Other Data

1 year from date of purchase


.85 lbs


7.5 × 6 × 2.5 in

UPC: 729440625092
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