StarTech.com 10ft USB to Null Modem Serial Adapter Cable, FTDI, RS232, USB-A

StarTech.com Null Modem USB Serial Adapter | FTDI Chipset & ESD Protection

The StarTech.com 10ft (3m) USB to Null Modem Serial Adapter Cable, Interchangeable DB9 Screws/Nuts, COM Retention, USB-A to RS232, FTDI, Level-4 ESD Protection,… connects legacy serial hardware to modern USB-A ports. It is designed for engineers and technicians who need reliable DCE serial communication. This adapter resolves DCE/DTE conflicts without extra crossover cables. It is a practical choice for UK industrial and IT environments.

Key Specifications

Seamless COM Port Integration

This adapter supports COM retention. It reassigns the COM port value automatically if you disconnect and reconnect the cable. It also retains the port after a system reboot. This feature reduces configuration time during maintenance. Engineers can maintain stable serial sessions across reboots. It is a key benefit for field service teams.

Interchangeable DB9 Fixings

The adapter includes pre-installed slotted D-Sub thumbscrews. You can remove these and install the supplied DB-9 nuts for other devices. This flexibility ensures a secure connection to various industrial equipment. It supports both standard and non-standard serial ports. Always verify the physical port type on your device before purchase. This hardware choice prevents loose connections in high-vibration environments.

Real-Time LED Diagnostics

Integrated LEDs provide immediate status updates. One LED indicates USB enumeration success. Two LEDs show data transmission and reception activity. This visual feedback speeds up troubleshooting. You can confirm link status without software tools. It is essential for quick fault isolation in busy labs or plant floors.

Wide OS and Platform Support

The adapter is compatible with Windows, macOS, ChromeOS, and Linux. Drivers install automatically on Windows 7 and newer. It also supports macOS 10.15 and above. Linux compatibility is confirmed. Server editions from Windows Server 2008 R2 to 2022 are supported. This broad support ensures integration into mixed IT environments. Note that older macOS versions may require manual driver checks.

Rugged Build and EMI Shielding

The cable uses a TPE jacket for durability. Level-4 ESD protection (15kV air, 8kV contact) safeguards electronics. Copper shielding minimises electromagnetic and radio frequency interference. Gold-plated connectors enhance signal conductivity. The operating temperature range is -40 to 80 °C. This build suits harsh UK industrial settings. However, always confirm environmental specs match your specific application.

Box contents

• 1 x StarTech.com 10ft USB to Null Modem Serial Adapter Cable
• 1 x Set of DB-9 nuts
• 1 x Manual

Check before you buy

• Confirm your device uses a DB-9 serial port and requires a null modem (DCE) connection.
• Verify the USB-A port is available on your desktop or laptop.
• Check that your operating system version is listed in the supported OS list.
• Ensure the physical access space accommodates a 3 m cable length.

Frequently Asked Questions

Q: Does this adapter work with Windows 11?

A: Yes, it is compatible with all Windows 11 editions, including Home and Pro.

Q: Is the chipset compatible with Linux?

A: Yes, the FTDI chipset is supported on Linux systems.

Q: Can I use this with a Mac?

A: Yes, it supports macOS 10.10 Yosemite through macOS 13.0 Ventura.

Q: Does it include a null modem crossover?

A: Yes, the cable is wired as a null modem to connect DCE devices directly.

Q: What is the maximum baud rate?

A: It supports up to 921.6 Kbit/s for high-speed serial communication.

The Consultant’s Verdict and Warranty

This adapter is ideal for UK engineers, technicians, and IT professionals maintaining legacy serial equipment. It offers reliable COM retention, broad OS support, and rugged construction for industrial use. The FTDI chipset ensures stable data transfer. Covered by the standard Manufacturer Warranty.