UGREEN 20223 USB-A to DB9 RS-232 Serial Adapter Cable 3.0m (Black)

The UGREEN 20223 USB-A to DB9 RS-232 Serial Adapter Cable 3.0m (Black) is a reliable USB-to-Serial converter designed to connect modern computers with legacy RS-232 serial devices. Featuring a USB-A connector on one end and a DB9 (9-pin) male serial connector on the other, this adapter provides a stable and efficient communication solution for industrial equipment, networking devices, point-of-sale (POS) systems, barcode scanners, CNC machines, PLC controllers, GPS receivers, modems, and other RS-232-compatible hardware.

Built with a high-performance USB-to-Serial chipset, the adapter ensures fast, stable, and accurate data transmission while supporting standard RS-232 communication protocols. It is compatible with USB 2.0 and backward compatible with USB 1.1, allowing seamless connectivity across a wide range of computers and laptops without requiring a native serial port.

The 3-meter cable length offers excellent flexibility for workstation setups, industrial environments, laboratories, server rooms, and office installations where extra reach is required. Gold-plated connectors and premium shielding minimize signal interference while ensuring long-term durability and reliable communication.

The UGREEN 20223 supports multiple operating systems including Windows, macOS, and Linux (driver requirements may vary depending on the operating system version and chipset). It works with numerous serial communication applications used for device configuration, diagnostics, firmware updates, and industrial automation.

Whether you’re maintaining legacy hardware, programming networking equipment, connecting industrial machinery, or managing serial communication devices, the UGREEN 20223 USB-A to DB9 RS-232 Serial Adapter Cable delivers dependable performance, broad compatibility, and professional-grade build quality.

Designed for both IT professionals and industrial users, this adapter is an ideal solution for extending the life of valuable RS-232 equipment while enabling seamless integration with today’s USB-equipped computers.

Key Features

• USB-A to DB9 (RS-232) serial adapter cable
• 3-meter cable length for flexible installation
• Connects modern USB computers to legacy serial devices
• High-speed and stable RS-232 data communication
• Gold-plated connectors for reliable signal transmission
• Premium shielding reduces electromagnetic interference
• USB 2.0 compatible and backward compatible with USB 1.1
• Supports industrial equipment, PLCs, POS systems, barcode scanners, GPS devices, and modems
• Compatible with Windows, macOS, and Linux (driver support may vary)
• Durable PVC jacket for long-lasting performance

Specifications