Digi International EP-USB-4S 4-Port Serial Adapter

Digi International EP-USB-4S Serial Adapter

Overview

The Digi EP-USB-4S is a 4-port external serial adapter that connects to host systems via USB. It supports RS-232, RS-422, and RS-485 communication protocols with a maximum data transfer rate of 230 Kbps per port. This adapter is suited for integrators and IT managers requiring legacy serial device connectivity on modern systems without native serial ports.

Compatibility

The EP-USB-4S connects via standard USB interface to Windows, Linux, and other USB-capable operating systems. It is commonly deployed in industrial control environments, telecommunications infrastructure, and security system installations where serial protocol devices remain in use alongside contemporary IT infrastructure.

Specifications

• 4 RS-232/422/485 serial ports
• USB host interface
• Data transfer rate: 230 Kbps
• External form factor
• Wired connectivity