Digi International
SKU: EP-USB-4
Digi International EP-USB-4 4-Port RS232 Serial Adapter
USB-to-serial adapter with 4 independent RS232 ports for legacy devices
Overview
Manufacturer-verified compatible cameras, recorders, mounts, accessories, and licenses for this product. Adjust quantities and add the entire bundle to your cart in one click.
Overview
Questions about this product? Free pre-sales support from a senior specialist — product questions, compatibility checks, BOM quotes, price confirmation — typically answered within one business day. Need camera placement or system design work? Engineering time is $175 per hour (qty 1 = 1 hour). Hardware buyers get up to one hour ($175) credited back on their order.
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.
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.
Manufacturer-verified compatible cameras, recorders, mounts, accessories, and licenses for this product. Adjust quantities and add the entire bundle to your cart in one click.
Support services and planning resources for commercial surveillance, access control, and infrastructure deployments.
Fixed scope • Fixed price