1. Hua Neke Atuview
The StarTech.com 1-Port FTDI USB to Serial RS232 Adapter Cable (Model ICUSB2321F) converts an available USB 1.1 or 2.0 port into an RS232 serial DB9 port. This allows for connection, monitoring, and control of various serial devices. It features COM retention, ensuring the same COM port value is automatically re-assigned upon disconnection/reconnection or system reboot. The adapter utilizes an FTDI chipset, offering enhanced customization, advanced features, and broad compatibility across multiple operating systems.
Āhuatanga matua:
- Taumahinga Mahi-maha: Ideal for digital signage, point-of-sale systems, and barcode scanners.
- Customizable Solution: FTDI chipset provides high customizability and compatibility.
- Hoahoa Kiato: USB powered, eliminating the need for external power adapters.
- Tāutatanga ngawari: Features COM port retention for robust serial connectivity and simplified setup.
- Whanui OS Hototahi: Supports Windows, Windows CE, Mac OS, and Linux.

Figure 1: StarTech.com 1-Port FTDI USB to Serial RS232 Adapter Cable. This image shows the adapter with its USB-A connector on one end and the DB9 serial port on the other, connected by a cable.
2. Tatūnga me te Tāuta
Follow these steps to set up your StarTech.com USB to Serial RS232 Adapter Cable:
- Honoa te Pūurutau: Plug the USB-A connector of the adapter cable into an available USB port on your computer.
- Tāuta Atekōkiri:
- For most modern operating systems (e.g., Windows 10/11, recent macOS versions), the necessary drivers for the FTDI chipset will install automatically upon connection.
- If automatic installation does not occur, or if you are using an older operating system, drivers can be downloaded from the StarTech.com website. A driver CD may also be included with the product.
- Manatokohia te Tāutatanga: After driver installation, verify the adapter is recognized by your system.
- On Windows, open Device Manager and look under "Ports (COM & LPT)". You should see an entry for "USB Serial Port (COMX)", where X is the assigned COM port number.
- On macOS or Linux, consult your system's documentation for verifying serial port recognition.
- Connect Serial Device: Connect your RS232 serial device (e.g., modem, barcode scanner, digital camera, GPS, POS device) to the DB9 male connector on the adapter. Ensure the connection is secure.

Whakaahua 2: Whakatata view of the DB9 serial port on the adapter, showing the screw-in connectors for a secure attachment to a serial device.
3. Nga Tohutohu Whakahaere
Once the adapter is installed and recognized by your operating system, it functions as a standard serial COM port. Applications that communicate via serial ports can now interact with your connected serial device.
- COM Port Retention: A key feature of this adapter is COM port retention. This means that if you disconnect the adapter from your computer and then reconnect it, or if you reboot your system, the operating system will automatically re-assign the same COM port number to the adapter. This eliminates the need to reconfigure your serial communication software each time.
- Whirihoranga Pūmanawa: Open your serial communication software (e.g., HyperTerminal, PuTTY, custom application) and select the COM port number assigned to the StarTech.com adapter. Configure the serial port settings (baud rate, data bits, parity, stop bits, flow control) to match those of your connected serial device.
- Whakawhiti Raraunga: Initiate communication through your software. The adapter will facilitate the data transfer between your computer's USB port and the serial device.
4. Tiaki
The StarTech.com USB to Serial RS232 Adapter Cable requires minimal maintenance to ensure long-term performance:
- Te horoi: Use a soft, dry cloth to clean the exterior of the adapter. Avoid using liquid cleaners or solvents, which may damage the device.
- Rokiroki: Whakaorangia te urutau ki te waahi makariri, maroke atu i te ra tika me te wera nui.
- Te whakahaere: Avoid bending or twisting the cable excessively, as this can damage internal wires. Do not apply excessive force when connecting or disconnecting the adapter.
- Ngā Whakahōu Pūmanawa/Atekōkiri: Periodically check the StarTech.com website for updated drivers or firmware, which may offer improved performance or compatibility.
5. Te Raru
If you encounter issues with your StarTech.com USB to Serial RS232 Adapter Cable, refer to the following common troubleshooting steps:
| Raruraru | Rongoa pea |
|---|---|
| Ko te urutau kaore i te mohiohia e te rorohiko. |
|
| Serial device not communicating. |
|
| COM port number changes unexpectedly. |
|
6. Whakatakotoranga
| Huanga | Taipitopito |
|---|---|
| Rahi Hua (L x W x H) | 1.8 x 1.6 x 0.9 inihi |
| Taumaha Tūemi | 3.17 hekere |
| Tau tauira | ICUSB2321F |
| Momo Tuhono | DB-9, USB Type A |
| Tiwhikete | FTDI FT232RL |
| Max Baud Reiti | 115.2 Kbps |
| FIFO Kaipupuri | 256 Paita |
| Parity Modes | None/Odd/Even/Mark |
| Moka Raraunga | 7 ranei 8 |
| Kati Moka | 1 ranei 2 |
| Te roa o te taura | 6 putu (1.8 mita) |
| Tae | Pango |
| Pūrere Hototahi | Monitor (general term for serial devices), Digital signage, Point of sale systems, Barcode scanners |
| Kaihanga | StarTech.com |
7. Pūtāhui me te Tautoko
StarTech.com products are designed for reliability and performance. For detailed warranty information and technical support, please refer to the official StarTech.com webpae, nga tuhinga ranei kei roto i to hua.
- Kaihanga: StarTech.com
- Pukapuka Kaiwhakamahi Whaimana (PDF): For the most comprehensive information, you can download the official user manual from the StarTech.com support page or via this link: StarTech.com USB to Serial Adapter User Manual.
- Tautoko Hangarau: Visit the StarTech.com support website for drivers, FAQs, and contact information for technical assistance.





