The UGREEN USB 2.0 A To DB9 RS-232 Male Adapter Cable 2M is a high-performance serial conversion cable built to connect DB9 female serial devices directly to modern USB host systems. Distributed by Keyphantom, this 2-meter adapter features an integrated Prolific / FTDI USB-to-Serial chipset that bridges standard USB 2.0 ports to serial hardware at data transmission rates up to 1Mbps. Engineered with 24K gold-plated connectors, high-purity tinned copper conductors, triple signal shielding, and threaded locking nuts, it guarantees reliable, low-latency communication with network switches, microcontrollers, barcode scanners, and industrial equipment.

  • DB9 RS-232 Male Connector: Connects directly into female RS-232 serial ports on routers, switches, PLCs, and diagnostic gear.
  • Built-in High-Performance Chipset: Integrated Prolific PL2303 / FTDI processor delivers stable data conversion without buffer delays.
  • 1Mbps Baud Rate Support: Handles programmable serial baud rates from 75 bps up to 1 Mbps for high-speed serial links.
  • Triple Signal Shielding Layer: Foil, braid, and ground wire shielding eliminate electromagnetic interference (EMI) and signal loss.
  • Universal OS Compatibility: Fully supports Windows 11/10/8.1/8/7/XP, macOS, and Linux kernels with easy driver installation.

UGREEN USB to DB9 RS-232 Male: Seamless Serial Data Bridge for Laptops & PCs

The UGREEN USB 2.0 A To DB9 RS-232 Male Adapter Cable 2M provides a reliable physical COM port for modern laptops and desktops that lack legacy DB9 interfaces. Distributed by Keyphantom, this adapter allows network administrators, engineers, and technicians to interface directly with serial devices over an extended 2-meter range.

Industrial Controller Chipset & Hardware Handshaking

Featuring a built-in USB-to-Serial processing engine, this cable assigns a customizable virtual COM port within your operating system. It fully supports hardware flow control (RTS/CTS, DTR/DSR) and automatic handshake protocols, preventing packet loss and timing sync errors during critical console programming sessions.

Gold-Plated Connectors & Secure Threaded Lock

Constructed with tinned oxygen-free copper conductors wrapped in multi-layer shielding, the cable suppresses electrical line noise in industrial environments. Its male DB9 head features 24K gold-plated pins and integrated side hex nuts, ensuring a tight, vibration-resistant connection to host hardware.

Technical Summary Table

Feature Specification
Model Name UGREEN USB to DB9 RS-232 Serial Male Cable
Part Number / SKU 20211 / CR104
Brand Keyphantom (UGREEN)
Connector A 1x USB 2.0 Type-A Male (Gold-Plated)
Connector B 1x DB9 RS-232 Serial Male (Gold-Plated Pins with Hex Standoff Nuts)
Integrated Chipset Prolific PL2303 / FTDI Chipset
Data Baud Rate 75 bps to 1,000,000 bps (1 Mbps)
Serial Protocol Support RS-232 (TxD, RxD, RTS, CTS, DTR, DSR, DCD, RI, GND)
Cable Length 2.0 Meters / ~6.6 Feet
Conductor Core & Shielding Tinned Oxygen-Free Copper (OFC) with Triple Shielding (Foil + Braid + Ground)
OS Compatibility Windows 11 / 10 / 8.1 / 8 / 7 / Vista / XP, macOS 10.6 and above, Linux
Device Compatibility Cisco / Juniper Routers & Switches, CNC Machines, Barcode Scanners, PLCs, Label Printers, Satellite Receivers, Medical Equipment, Serial Modems