EXSYS EX-1334V Industrial 4-Port USB to RS-232 Serial Adapter with FTDI Chipset, 15kV ESD Protection, Metal Housing

Four independent RS-232 ports at up to 921.6 Kbps each—this EXSYS EX-1334V turns a single USB 2.0 connection into a quad-channel serial powerhouse. Built around the FTDI FT4232HL controller, it delivers rock-solid compatibility and sustained throughput for industrial automation, POS systems, and legacy device integration.

Overview

The EX-1334V is a rugged USB-to-serial adapter that provides four DB9 male RS-232 ports from one USB Type-B host connection. It supports data rates up to 921.6 Kbps per port, with full modem control and hardware/software flow control. The metal housing and wide operating temperature range (-40°C to 85°C) make it suitable for harsh environments, while 15kV ESD protection and surge protection safeguard connected equipment. Bus-powered operation eliminates the need for an external supply in most setups, though an optional 5V DC input is available for power-hungry applications.

What stands out

• FTDI FT4232HL chipset ensures broad OS support and reliable performance.
• Four independent RS-232 ports allow simultaneous communication with multiple devices.
• Industrial-grade metal housing with wall-mount capability for secure installation.
• 15kV ESD and surge protection protect against electrical transients.
• Wide operating temperature range from -40°C to 85°C for extreme environments.
• LED indicators per port provide at-a-glance Tx/Rx activity monitoring.
• Bus-powered design with optional external 5V DC for flexible power options.

Technical details

• Host Interface: USB 2.0 Type-B (female)
• Serial Interface: 4 x RS-232 (DB9 male)
• Max Data Transfer Rate: 921.6 Kbps per port
• Chipset: FTDI FT4232HL
• ESD Protection: 15kV on RS-232 signals
• Surge Protection: Yes
• Operating Systems: Windows XP/Vista/7/8/10/11, macOS, Linux
• Power: USB bus-powered, optional external 5V DC
• Indicators: LED for Tx/Rx activity per port
• Housing: Metal (industrial grade)
• Operating Temperature: -40°C to 85°C
• Humidity: 5 to 95% RH non-condensing
• Mounting: Wall mountable (kit included)
• Compliance: CE, FCC, RoHS
• Included Accessories: USB cable, driver CD/download, manual, wall mount kit

Our verdict

If you need multiple reliable RS-232 connections from a single USB port in demanding conditions, the EX-1334V delivers. Its FTDI chipset, robust protection, and industrial build make it a dependable choice for integrators and IT professionals.