StarTech.com USB to Null Modem RS232 Serial Adapter Cable (USB-A to DB9) - FTDI, COM Retention

Add RS-232 DCE serial communications support to a desktop or laptop via a USB Type-A port with this StarTech.com Null Modem USB Serial Adapter. Designed to resolve DCE/DTE conflicts without additional cross-wired cables, the adapter delivers a DB9 (DE-9) female serial connection using the FTDI FT232R chipset for stable data transfer. COM retention maintains consistent COM port assignment when disconnected or reconnected. The adapter includes pre-installed and removable slotted D-Sub thumbscrews and DB9 nuts for broad device compatibility, while data transmission, receive and USB LEDs provide real-time port activity diagnostics. Built for reliability, the cable features a molded TPE jacket, Level-4 ESD protection (15kV air / 8kV contact), copper shielding to minimize EMI/RFI, and gold-plated connectors to improve conductivity. Drivers auto-install on Windows 7 and newer, macOS 10.15 and above, and Linux; compatible with ChromeOS. Product is supported by a 2-year limited warranty.

• TECH SPECS: 10ft (3m) 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
• 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
• 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; Resolve DCE/DTE conflicts without using cross-wired cables/adapters
• 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
• 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 null modem RS232 port to a computer using a USB-A port