Conexant RD02-D490
Conexant RD02-D490 Internal Modem Card User Manual
Model: RD02-D490 / RD02-D495-009
1. Introduction
This manual provides instructions for the installation, operation, and maintenance of the Conexant RD02-D490 / RD02-D495-009 Internal Modem Card. This PCI desktop modem card is designed to provide 56K dial-up connectivity and features two ports for phone and line connections.
Please read this manual thoroughly before installing and operating the modem card to ensure proper functionality and to prevent damage to the device or your computer system.
2. Setup and Installation
Before beginning installation, ensure your computer is powered off and unplugged from the wall outlet. It is recommended to wear an anti-static wrist strap to prevent electrostatic discharge (ESD) damage to components.
2.1 Package Contents
- Conexant RD02-D490 / RD02-D495-009 Internal Modem Card
- (Optional) Driver CD or link to driver download
2.2 Hardware Installation
- Prepare Your Computer: Power off your computer, unplug the power cord, and disconnect all peripheral devices. Open the computer case by removing the side panel.
- Locate an Available PCI Slot: Identify an empty PCI expansion slot on your computer's motherboard. These slots are typically white or beige.
- Remove Slot Cover: Carefully remove the metal slot cover corresponding to the chosen PCI slot from the back of your computer case.
- Insert the Modem Card: Align the modem card with the PCI slot. Apply even, firm pressure to both ends of the card until it is fully seated in the slot. Ensure the metal bracket on the card aligns with the opening at the back of the case.
- Secure the Card: Secure the modem card's metal bracket to the computer case using the screw removed from the slot cover, or a new screw if provided.
- Close Case and Reconnect: Replace the computer case side panel. Reconnect all peripheral devices and the power cord.

Figure 1: Conexant RD02-D490 Internal Modem Card, showing the PCI connector and phone/line ports.
2.3 Driver Installation
- Power On: Turn on your computer. The operating system may detect new hardware and attempt to install drivers automatically.
- Install Drivers: If automatic installation fails or if a driver CD was included, insert the driver CD into your optical drive and follow the on-screen instructions. Alternatively, download the latest drivers from the official Conexant support website for model RD02-D490 or RD02-D495-009.
- Verify Installation: After driver installation, check Device Manager (Windows) or System Information (macOS/Linux) to ensure the modem card is recognized and functioning correctly without any error indicators.
3. Operating Instructions
The Conexant RD02-D490 modem card provides dial-up connectivity for internet access and fax capabilities.
3.1 Connecting Phone Lines
- LINE Port: Connect your telephone wall jack to the "LINE" port on the modem card using a standard RJ-11 phone cable.
- PHONE Port: If you wish to connect a telephone handset to the same line, connect it to the "PHONE" port on the modem card. This allows you to use the phone while the modem is not actively in use.

Figure 2: Close-up view of the Conexant RD02-D490 modem card, highlighting the LINE and PHONE ports.
3.2 Dial-up Internet Connection
- Configure Dial-up Networking: In your operating system's network settings, create a new dial-up connection. You will need your Internet Service Provider's (ISP) dial-up phone number, username, and password.
- Initiate Connection: Once configured, you can initiate the dial-up connection through your operating system's network connection interface. The modem will emit dialing sounds and connect to your ISP.
3.3 Fax Capabilities
To send or receive faxes, you will need fax software compatible with your operating system. Install and configure the software according to its instructions, selecting the Conexant modem as the fax device.
4. Maintenance
The Conexant RD02-D490 modem card requires minimal maintenance. Follow these guidelines to ensure its longevity and optimal performance:
- Keep Dust-Free: Periodically open your computer case and gently clean any dust accumulation on the modem card and surrounding components using compressed air. Ensure the computer is powered off and unplugged before cleaning.
- Ensure Proper Ventilation: Ensure your computer case has adequate airflow to prevent overheating of internal components, including the modem card.
- Software Updates: Keep your operating system and modem drivers updated to the latest versions available from Conexant or your system manufacturer.
5. Troubleshooting
If you encounter issues with your Conexant RD02-D490 modem card, refer to the following troubleshooting steps:
- Modem Not Detected:
- Ensure the card is fully seated in the PCI slot.
- Verify that the correct drivers are installed and updated.
- Try the card in a different PCI slot if available.
- No Dial Tone or Connection Failure:
- Check that the phone cable is securely connected to the "LINE" port on the modem and the wall jack.
- Ensure the phone line is active and working by testing it with a standard telephone.
- Verify the dial-up number and account credentials (username/password) are correct in your dial-up networking settings.
- Disable any call waiting features on your phone line, as they can interfere with modem connections.
- Slow Connection Speed:
- Ensure you are connecting to a 56K compatible ISP.
- Check the quality of your phone line. Noise or interference can reduce connection speed.
- Update modem drivers.
6. Specifications
| Feature | Detail |
|---|---|
| Model Name | RD02-D490 / RD02-D495-009 |
| Brand | Conexant |
| Interface | PCI |
| Data Rate | 56K (V.90/V.92 compatible) |
| Ports | 2 (LINE, PHONE) |
| Compatible Devices | Personal Computer |
| Item Weight | 2.08 ounces (approx. 59 grams) |
| Product Dimensions (LxWxH) | 5 x 5 x 1 inches (approx. 12.7 x 12.7 x 2.54 cm) |
| UPC | 609015017821 |
7. Warranty and Support
For specific warranty information regarding your Conexant RD02-D490 / RD02-D495-009 Internal Modem Card, please refer to the documentation provided at the time of purchase or contact the seller directly. Warranty terms may vary based on region and retailer.
For technical support, driver downloads, or further assistance, please visit the official Conexant support website or contact their customer service department. Ensure you have your product model number (RD02-D490 or RD02-D495-009) and any relevant purchase information ready when seeking support.
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