- Description
- Specifications
6.6-Foot USB to Null Modem Serial Adapter Cable with FTDI FT232R Chipset, COM Port Retention, and Industrial-Grade ESD Protection for Reliable DCE Device Connectivity
The StarTech 1P6FFCN-USB-SERIAL is a null modem adapter cable that converts a USB-A port into a DB9 RS-232 serial connection wired in null modem (DCE) configuration, enabling direct communication with serial devices without a separate null modem adapter. The FTDI FT232R chipset delivers data rates up to 921.6 Kbps with 128-byte receive and 256-byte transmit FIFO buffers, while COM port retention ensures the assigned COM number persists across reconnections and reboots for consistent device addressing in automated environments.
At 6.6 feet (2 meters), this cable provides working distance between the host computer and serial equipment while maintaining signal integrity through copper shielding and gold-plated connectors. Level-4 ESD protection rated at 15kV air and 8kV contact discharge combined with a -40°C to 80°C operating range makes the cable suitable for industrial floor deployments where static and temperature extremes are common.
Where the StarTech 1P6FFCN-USB-SERIAL Null Modem Adapter Cable Fits
- Industrial automation connecting to DCE serial devices where the null modem wiring eliminates a separate crossover adapter, the FTDI FT232R chipset supports data rates to 921.6 Kbps for high-speed serial protocols, and Level-4 ESD protection handles electrostatic discharge on factory floors
- Network infrastructure management via console ports where the 6.6-foot reach connects laptops to rack-mounted switches and routers, COM retention maintains consistent port assignments across sessions, and TX/RX/USB LED indicators confirm active data flow during configuration
- Point-of-sale and lab equipment requiring persistent serial connections where COM port retention prevents application errors from port reassignment, the DB9 female connector with interchangeable thumbscrews and hex nuts ensures a secure mechanical connection, and the -40°C to 80°C range supports uncontrolled environments
What the StarTech 1P6FFCN-USB-SERIAL Null Modem Adapter Cable Delivers
- FTDI FT232R with 921.6 Kbps Throughput: Professional-grade FTDI chipset with 128-byte RX and 256-byte TX FIFO buffers provides reliable high-speed serial communication with broad OS driver support across Windows, macOS, and Linux.
- Null Modem (DCE) Wiring: Built-in crossover configuration connects directly to DCE serial devices without requiring a separate null modem adapter, supporting 7/8 data bits, 1/2 stop bits, and odd/even/mark/space/none parity modes.
- COM Port Retention: Assigned COM port number persists through cable disconnections and system reboots, preventing application failures in automated systems that reference specific COM assignments.
- Industrial-Grade Protection: Level-4 ESD protection rated at 15kV air discharge and 8kV contact discharge, copper shielding against EMI, gold-plated connectors for corrosion resistance, and a -40°C to 80°C operating temperature range.
- Secure DB9 Connection: Interchangeable mounting hardware ships with thumbscrews pre-installed and hex nuts included, allowing tool-free or tool-secured attachment to match the mating connector style on any serial device.
