USB 4 Port Serial DB-9 RS-232 Adapter Box – Prolific Chipset

USB to RS232 Adapter

The USB-4X-RS232 USB to serial converter is designed for PC, thin client, or server to provide instant COM ports expansion via the Universal Serial Bus (USB).

  • Great solution for the addition of new RS232 communication ports for newer PC or Laptops.
  • Serial speed supports 1.2Mbps and 256 byte transmit and receive through all ports.
  • System recognition of the Serial Box with no conflict.
  • Compliant with USb 2.0 specifications, backward compatible with USB 1.1


Out of Stock

Model No. USB-4XRS232

Software & Drivers

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The USB-4X-RS232 USB 4 Port Serial DB-9 RS232 Adapter provides a scalability and interface that is designed to quickly and efficiently adapt to new USB technologies. Multiple modules can be added to a single USB host interface allowing you to add WAN connectivity as needed.

The USB-4X-RS232 USB 4 Port Serial DB-9 RS232 Adapter allows for RS-232 serial port expansion for new PC or Laptops that are not equipped with an integrated COM port. The adapter’s serial speed will support up to 1.2Mbps. 256-byte Transmitting and Receiving Buffer though its 4 serial ports.  USB to 4S RS232 Adapter

Prolific USB to 4S RS232 Adapter

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 USB-4X-RS232 is an ideal solution for your expanding applications.

USB Port: Fully compatible with USB1.1 and Forward compatible with USB2.0 Serial Ports: Supports 4 DB9-Male UART Serial ports.


  • Provides 4 Serial Ports over USB Port.
  • Easy Serial Port Expansion over USB Port.
  • Supports Serial Speed up to 1.2Mbps.
  • 256-byte Transmitting and Receiving Buffer.
  • Provides 4 DB9-Male Connectors.
  • USB1.1 and USB2.0 Backward Compatible.
  • Provides Detachable Wall Mounting KIT.
  • DC Jack for Optional DC 5V Power Input.

Key Benefits:

  • Buffer: 256 bytes
  • Parity: None, Odd, Even, Mark, Space
  • Data bits: 7,8,16 -Stop Bits: 1, 1.5, 2
  • Baud Rate: 75 to 1.2Mbps
  • Prolific Chipset
  • Watch Dog Function: A built-in watch dog function is designed to reset the MG-4232 when the hardware/software hang because some other unknown causes.

Additional Features:

  • Power Requirements: Normally Power solely from USB Bus, no external power supply needed.
  • Prolific Chipset
  • A DC Jack Input available supports power over DB9-Male applications.
  • Operating Temp.: 0 to 55°C (32 to 131°F)
  • Storage Temp: -20 to 85°C (-4 to 185°F)
  • Operating Humidity: 5 to 95% RH
  • Form Factor: 5.90″(L)x2.61″(W)x1.02″(H) (15.00 x 6.65 x 2.60 cm)

OS Support:

  • Windows XP, Vista, Windows 7, Windows 8, and Windows 10
  • Linux and Mac OS 10.X
Additional Information

Additional Information

Input Voltage

+5V DC

Country of Origin






Mounting Style

Surface Mount


4 Serial Ports

Screw Lock Compatible


Serial Attributes
Serial Standards


OS Support

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

Operating Temperature

0C to 55C



Other Data

DB9 Male w/ Nuts

Chip Model

NEC D720114, PL2302HX, ZT3243LFEA


1 year from date of purchase


.85 lbs


9 × 6.25 × 1.75 in

UPC: 729440626808
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