EXSYS EX-1304 USB to RS-232 Serial Adapter Cable with Prolific PL2303 Chipset, 0.8m, Black

Connect legacy RS-232 devices to modern USB-equipped computers with the EXSYS EX-1304 serial adapter. This compact cable converts a USB Type-A port into a standard DB9 male RS-232 serial port, enabling communication with industrial machinery, point-of-sale terminals, networking equipment, and laboratory instruments. The built-in Prolific PL2303 chipset ensures reliable data transfer at speeds up to 115.2 Kbps, while the 0.8-meter cable provides flexibility in tight workspaces. Bus-powered operation eliminates the need for an external power supply, and the adapter is compatible with Windows, macOS, and Linux systems. Whether you are troubleshooting a legacy device or integrating serial peripherals into a modern setup, this adapter offers a straightforward and dependable solution.

Key specifications

• Host interface: USB Type-A male
• Device interface: RS-232 DB9 male
• Chipset: Prolific PL2303
• USB standard: USB 1.1 / 2.0 compatible
• Max data transfer rate: 115.2 Kbps
• FIFO buffer: 128-byte transmit, 384-byte receive
• ESD protection: 15 kV on RS-232 signals
• Power source: USB bus-powered
• Cable length: 0.8 m
• Supported operating systems: Windows, macOS, Linux
• Data bits: 5, 6, 7, 8
• Stop bits: 1, 1.5, 2
• Parity: Even, Odd, None, Mark, Space
• Flow control: XON/XOFF, RTS/CTS, DTR/DSR, None
• Colour: Black
• Housing material: Plastic

Why choose it

The EX-1304 stands out for its robust ESD protection and proven Prolific chipset, which ensures stable performance across a wide range of operating systems. Its bus-powered design means no extra cables or power bricks, making it ideal for on-the-go technicians. The 0.8-meter cable strikes a balance between reach and portability, and the included driver support simplifies installation on most platforms. With support for various serial configurations, it adapts to the specific requirements of your connected equipment.

Ideal use cases

• Connecting legacy serial printers, scanners, or barcode readers to modern laptops.
• Configuring network switches, routers, and firewalls via console port.
• Interfacing with industrial control systems, PLCs, and CNC machines.
• Upgrading point-of-sale systems that rely on RS-232 peripherals.
• Laboratory data acquisition from older instruments.

Good to know

The adapter uses a standard USB Type-A connector and a DB9 male serial connector, so no additional gender changers are needed for most devices. The 15 kV ESD protection safeguards against electrostatic discharge, a common issue in industrial environments. Drivers for Windows, macOS, and Linux are readily available from the Prolific website or via automatic updates. Note that while the adapter is compatible with USB 2.0 ports, it operates at USB 1.1 speeds, which is sufficient for RS-232 communication.