The UGREEN USB to DB9 RS-232 Adapter Cable (CR104) is a high-quality solution for connecting modern USB-enabled devices to legacy serial equipment. Featuring the reliable Prolific PL2303 chipset, this 1.5-meter (approx. 4.9 ft) cable ensures stable and accurate data transmission, making it ideal for professional, industrial, and personal applications. With plug-and-play functionality on most modern operating systems, gold-plated connectors, and a flexible PVC jacket, it combines durability, convenience, and performance in one cable.

Key Features

Seamless USB to Serial Connectivity

• Connects USB-A ports to DB9 RS-232 serial devices

• Supports full RS-232 voltage levels and hardware handshake protocols

• Ideal for devices like modems, routers, barcode scanners, POS systems, CNC machines, and PLC controllers

Stable Performance with PL2303 Chipset

• Equipped with the professional Prolific PL2303 chipset for reliable, noise-resistant signal transmission

• Supports data transfer rates up to 1 Mbps

• Ensures accurate and stable connections even with long-term use

Durable and Long-Lasting Design

• Gold-plated connectors resist corrosion and maintain consistent conductivity

• Flexible PVC jacket prevents tangling, bending, and wear

• 1.5-meter length provides ample reach for desk or industrial setups

Plug-and-Play Convenience

• Works out of the box on Windows 8/10/11

• Requires a one-time driver installation on some older systems such as Windows 7/XP, Mac OS X, and Linux

• USB-powered—no external power supply needed

Wide Compatibility

• Compatible with Windows 11/10/8.1/8/7/Vista/XP, Mac OS X 10.6 and above, and Linux kernels 2.4.31 and later

• Designed for serial devices that follow standard RS-232 protocols

• Note: May not work with cutting plotters or single-chip microcomputers

Specifications

• Model: UGREEN CR104 (UG-20211)

• Type: USB-A 2.0 Male → DB9 RS-232 Male

• Length: 1.5 meters (4.9 ft)

• Chipset: Prolific PL2303

• Data Transfer Rate: Up to 1 Mbps

• Connectors: Gold-plated for durability

• Power Supply: USB-powered, no external adapter required

• Compatible Systems: Windows 11/10/8.1/8/7/Vista/XP, Mac OS X 10.6+, Linux 2.4.31+

• Warranty: 1-year warranty