Latching USB to 4 ports Serial (male) Adapter/Converter



  • Latching USB to 4 ports Serial (male) Adapter/Converter
  • RS422/485 Interface
  • Supports USB Rev. 2.0
  • Communication speed: Up to 921.6kbps
  • Display communication status via TX/RX LED
  • Auto Togging: Automatic control of BUS I/O for RS422/RS485
  • Slew-Rate Limit Control
  • ±15kV Surge protection


Interface Type
  Specification USB Specification Rev. 2.0, Hi-Speed
  Interface RS422/RS485(Combo)
  Number of ports 4
  Maximum Speed 921.6Kbps
  Signal Lines RS422: TXD+, TXD-, RXD+, RXD-
  Surge Protection 15KV Surge protection
  Flow Control XON/XOFF
  Data crash prevent Auto Toggling
  Controller FT4232H
  Connector DE-09P (DB9 Male)
Supported OS Windows 7/8/8.1/10
Windows Server 2008, 2012
Utility TestView
Operating Environment
  Operation Temperature 0 ~ 50 °C
  Storing Temperature -20 ~ 80 °C
  Humidity 5 ~ 95% Non-Condensing
  Certificates CE, FCC, KC

Easily and quickly add additional serial ports to your system through the USB port. The Multi-4/USB deliver maximum performance up to 921.6Kbps.  The USB to Serial Multiports support most Windows and Linux operating systems and include 15,000 volt surge suppression eliminating blown ports.

The Multi-4/USB includes a 4 port panel with a DB9 connector and is available in two models, RS232 and RS422/RS485. Simply plug in the USB connector and you have a COM port to connect modems, printers, bar-code scanners or other any serial devices.

Connector Panel:

  • The Multi-4/USB plugs into the USB port on your system. The connector panel has four DB9 male connectors and is available with support for either RS232 or RS422/RS485. LEDs next to the connector provide visual communication status of the ports. No additional power supply is equired.

Supports USB Specification Revision 2.0:

  • The Multi-4/USB supports revision 2.0 and is compatible with revision 1.1.

15KV Surge Protection – Built-in:

  • Don’t risk blown ports and down time. The Multi-4/USB has built-in 15,000 volt surge suppression to protect against electrical spikes and blown ports giving you more reliable communications.