StarTech.com 6.6ft (2m) USB to Serial Adapter Cable, COM Retention, FTDI, DB9 RS232, Interchangeable DB9 Screws/Nuts, Windows/macOS/Linux

StarTech.com 6.6ft (2m) USB to Serial Adapter Cable, COM Retention, FTDI, DB9 RS232, Interchangeable DB9 Screws/Nuts, Windows/macOS/Linux

Add RS-232 serial communication support to USB-A enabled Data Terminal Equipment (DTE - e.g., desktop or laptop), using this 6.6-foot (2-meter) straight through USB to Serial Adapter Cable.

Serial Port Expansion

The USB Serial Adapter adds an RS-232 serial DB/DE-9 (male) connector to a desktop or laptop via a USB Type-A port. Secure the adapter to a serial device, using pre-installed and removable slotted D-Sub thumbscrews or install the included DB-9 Nuts for compatibility with other serial peripheral devices or cables.

LED Indicators

Data transmission and reception LED indicators on the adapter provide real-time monitoring of port activity. The USB LED indicates when the adapter has successfully enumerated on the desktop or laptop. All the LEDs aid with diagnostics and troubleshooting.

Seamless Connectivity

The adapter is compatible with Windows, macOS, ChromeOS, and Linux. Drivers automatically install to Windows 7 and newer versions, macOS 10.15 and above, and Linux. The USB to RS-232 adapter features COM retention, which automatically reassigns the COM port value if the cable is disconnected and reconnected, or if the system is rebooted.

Built To Last

The rugged TPE construction and Level-4 ESD protection (15kV air and 8kV contact) enhance the reliability and longevity of the USB to Serial Adapter. Copper shielding minimizes Electromagnetic and Radio Frequency Interference (EMI and RFI). Gold-plated connectors enhance signal conductivity.

• INTERCHANGEABLE NUTS & SCREWS: Secure the adapter to a serial device using the pre-installed DB9 screws, or install the included DB9 Nuts for compatibility with serial peripheral devices/cables; Add a DB9 RS-232 port to a computer, using a USB-A port


• LED INDICATORS: Transmit and Receive LED indicators offer real-time monitoring of port activity, while the USB LED indicates when the adapter is successfully recognized by the desktop or laptop


• COMPATIBILITY: Works with Windows, macOS, ChromeOS, and Linux; Drivers auto-install in Windows 7+, macOS 10.15+, and Linux; COM retention enables the COM port to automatically re-assign if the cable is disconnected/reconnected or if the system is rebooted


• BUILD QUALITY: Solid one-piece molded TPE housing and Level-4 ESD protection (15kV air/8kV contact) enhance reliability and longevity; Copper shielding minimizes EMI/RFI interference; Gold-plated connectors; Extended operating temperature of -40°C to 80°C


• TECH SPECS: 6.6-foot (2-meter) Cable Length; FTDI FT232R Chipset; Max Baud Rate: 921.6Kbps; 128 Byte RX and 256 Byte TX FIFO; Odd/Even/Mark/Space/None Parity Modes; 7 or 8 Data Bits; 1 or 2 Stop bits