StarTech.com 1m USB-A to RS232 Null Modem Serial Adapter, FTDI, ESD Protection

StarTech.com Null Modem USB to Serial Adapter | FTDI Chipset

The StarTech.com 3ft (1m) USB to Null Modem Serial Adapter Cable, Interchangeable DB9 Screws/Nuts, COM Retention, USB-A to RS232, FTDI, Level-4 ESD Protection,… adds RS-232 DCE serial support to modern desktops and laptops. It resolves DCE/DTE conflicts without extra cross-wired cables. This adapter suits engineers, lab technicians, and IT admins maintaining legacy serial equipment. It connects via a standard USB-A port and features an FTDI chipset for reliable data transfer.

StarTech.com 3ft (1m) USB to Null Modem Serial Adapter Cable, Interchangeable DB9 Screws/Nuts, COM Retention, USB-A to RS232, FTDI, Level-4 ESD Protection,…

Slim Specs Table

Secure DB-9 Connectivity with Interchangeable Hardware

This adapter includes pre-installed thumbscrews for direct attachment to serial devices. You can also install the supplied DB-9 nuts for wider cable compatibility. This flexibility ensures a firm, reliable connection in various setups. The design avoids the need for additional adapters when interfacing with different peripherals.

Real-Time Diagnostics via LED Indicators

Integrated LEDs provide clear status for USB enumeration and data activity. You can monitor transmission and reception signals in real time. This visual feedback speeds up troubleshooting and confirms a stable link. It reduces guesswork during installation and maintenance tasks.

Broad OS Support with COM Port Retention

The adapter supports Windows, macOS, Linux, and ChromeOS. Drivers install automatically on compatible systems, including Windows 7 and newer. COM retention reassigns the same port value after disconnection or system reboot. This feature prevents software reconfiguration in industrial or lab environments.

Robust Build with ESD and EMI Protection

Level-4 ESD protection (15kV air, 8kV contact) safeguards the adapter and host system. Copper shielding minimises electromagnetic and radio frequency interference. The TPE jacket and gold-plated connectors enhance durability and signal integrity. Operating temperatures range from -40 to 80 °C for demanding conditions.

Sustainable and Standards-Compliant Design

The product carries RoHS compliance and sustainability certification. Package dimensions are 220 mm (W) x 200 mm (D) x 25 mm (H). Total package weight is 84 g. The cable itself weighs 55 g. These details help with storage and shipping planning.

Box contents

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

Check before you buy

• Confirm your device has a USB-A port for connection.
• Verify your serial device uses a DB-9 interface and DCE signalling.
• Check that your operating system version is listed in the specs.
• Ensure your environment suits the -40 to 80 °C operating range.

Frequently Asked Questions

Q: Does this adapter work with null modem applications?

A: Yes, it is a null modem cable that resolves DCE/DTE conflicts directly.

Q: Is the DB-9 connector removable?

A: No, the DB-9 is fixed; thumbscrews and nuts are interchangeable for attachment.

Q: Do I need to install drivers manually?

A: Drivers install automatically on supported Windows, macOS, and Linux systems.

Q: Can the COM port number change after reboot?

A: No, COM retention reassigns the same port value after disconnection or reboot.

Q: Is this suitable for industrial environments?

A: Yes, it offers ESD protection, EMI shielding, and a wide operating temperature range.

The Consultant’s verdict & warranty

This adapter is ideal for professionals needing reliable RS-232 serial access via USB-A. It suits engineers, technicians, and IT teams working with legacy equipment. The FTDI chipset, COM retention, and rugged build provide dependable performance. Covered by the standard Manufacturer Warranty.