StarTech.com USB to Serial Adapter Cable, 3m, COM Retention, FTDI, RS232, Windows/macOS/Linux
£39.90 inc VAT
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About This Item
- FTDI FT232R chipset with 921.6 Kbit/s baud rate
- USB-A to DB-9 male straight cable, 3 m, black
- COM retention for automatic port reassignment
- Windows, macOS, Linux and Server OS compatibility
- 256 B FIFO, 7/8 data bits, multiple parity/stop options
- Operating temperature -40 to 80 °C, ESD protection
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StarTech.com USB to Serial Adapter | 3m RS232 Cable
This product is the StarTech.com 10ft (3m) USB to Serial Adapter Cable, COM Retention, Interchangeable Screws/Nuts, USB-A to DB9 RS232, FTDI IC, ESD Protection, Windows/macOS/Linux. It adds an RS232 serial port to a desktop or laptop using an available USB-A port. The cable provides reliable serial communication for industrial, data, or legacy equipment. It uses the FTDI FT232R chipset for stable performance. This is a practical choice for UK technicians needing a robust, straight-through connection.
StarTech.com 10ft (3m) USB to Serial Adapter Cable, COM Retention, Interchangeable Screws/Nuts, USB-A to DB9 RS232, FTDI IC, ESD Protection, Windows/macOS/Linux
| Metric | Spec. |
|---|---|
| Cable Length | 3 m |
| Connector 1 | USB Type-A (Male) |
| Connector 2 | DB-9 (Male) |
| Chipset | FTDI FT232R |
| Baud Rate | 921.6 Kbit/s |
| Operating Temp | -40 to 80 °C |
Reliable Serial Port Expansion
This cable adds a DB-9 RS232 port via USB-A. It connects to desktops or laptops for serial communication. The 3m length offers flexible reach. It is a straight-through design for direct device links. This supports legacy peripherals that need serial connectivity.
Interchangeable Screw and Nut Options
The adapter includes pre-installed thumbscrews. You can also fit the supplied DB-9 nuts for other devices. This ensures compatibility with varied serial cables. It simplifies secure connections in industrial setups. So, you can adapt to different hardware without extra parts.
FTDI Chipset for Stable Data Transfer
It uses the FTDI FT232R IC. This chipset is widely supported and reliable. It handles baud rates up to 921.6 Kbit/s. The FIFO buffer is 256 B. In practice, this reduces data errors in busy environments.
COM Port Retention for Consistency
The adapter features COM retention. It reassigns the same COM port after reconnection or reboot. This prevents software reconfiguration. It saves time for repeated tasks. Also, it aids scripted or automated workflows.
LED Indicators for Diagnostics
Data transmission and reception LEDs show real-time activity. A USB LED confirms successful enumeration. These indicators help troubleshoot connections quickly. You can verify port status without software tools.
Rugged Build with ESD Protection
Level-4 ESD protection is rated at 15kV air and 8kV contact. Copper shielding minimises EMI and RFI. Gold-plated connectors improve signal conductivity. The TPE jacket adds durability. However, the warranty region is not specified; confirm UK coverage before purchase.
Box contents
- 1 x StarTech.com USB to Serial Adapter Cable (3 m)
- 1 x Set of DB-9 nuts
- Pre-installed slotted D-Sub thumbscrews
Key points to check
- Confirm the host device has a USB-A port available.
- Verify your serial peripheral uses a DB-9 RS232 interface.
- Check that your OS is in the supported list (Windows, macOS, Linux).
- Confirm the warranty region and UKCA/CE compliance with our team.
Common questions
Q: Does this adapter work with Windows 11?
A: Yes, it supports Windows 11 and earlier versions back to Windows 7.
Q: Is the cable compatible with macOS?
A: Yes, it supports macOS from 10.10 Yosemite to 13.0 Ventura.
Q: Can I use it with Linux systems?
A: Yes, Linux is supported; drivers typically install automatically.
Q: Does it retain the COM port after reboot?
A: Yes, COM retention reassigns the same port after reboot or reconnection.
Q: What is the maximum baud rate?
A: The adapter supports up to 921.6 Kbit/s.
Q: Are screws and nuts included?
A: Yes, thumbscrews are pre-installed and DB-9 nuts are included.
The Consultant’s verdict and warranty
This adapter is ideal for UK technicians, engineers, and developers who need a reliable RS232 link from a USB-A port. It suits industrial, lab, and legacy equipment tasks. The FTDI chipset, COM retention, and rugged build provide dependable performance. Covered by the applicable manufacturer warranty.

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