Comprehensive Product Summary – AP2T2-3 PCI 1-Port RS232/422/485 Shared Port Card (5V Only)

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### 1. Product Overview

Product Name: PCI 1-Port RS232/422/485 Shared Port Card (5V Only)
Model: AP2T2-3
Series: AP1T2 Advanced PCI Sharer Card Series
Article Number: AP2T2-3
Manufacturer: Rayon Technology Co., Ltd.
Manufacturer Address: 2F, No. 177, Chung Shan 2 Rd., Lu Chou City, Taipei Hsien, Taiwan
Contact:
- Tel: +886-2-82858362
- Fax: +886-2-82857065
- Email: rayon@ms1.hinet.net / info@rayontech.com.tw
- Web: [www.rayontech.com.tw](http://www.rayontech.com.tw) / [www.computex.com.tw/rayon](http://www.computex.com.tw/rayon)

The AP2T2-3 is a high-performance PCI serial communication card designed to provide a single shared COM port that supports RS232, RS422, and RS485 interfaces. It is engineered for industrial control, automation, and communication applications requiring flexible serial connectivity through a standard PCI bus interface. The card operates exclusively on 5V PCI slots, ensuring compatibility with legacy and industrial-grade systems.

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### 2. Key Features

- Multi-Protocol Serial Interface: Supports RS232, RS422, and RS485 communication standards, selectable per port via DIP switch.
- Shared Port Architecture: Two DB9 male connectors share a single COM port, enabling Poll & Acknowledge (Poll & Ack) communication environments.
- Flexible Configuration: Each connector can independently be configured for RS232, RS422, or RS485 operation.
- High Compatibility: Fully compatible with Windows 2000, XP, Vista, Windows 7/8, and Linux operating systems.
- Plug & Play PCI Interface: Automatic I/O, memory, and IRQ mapping assigned by the PCI BIOS for simplified installation.
- High-Speed Communication: Supports baud rates from 50 to 115,200 bps.
- Industrial-Grade Design: Suitable for industrial control systems, automation equipment, and embedded PC applications.
- Compact Form Factor: Standard PCI card dimensions with optional low-profile bracket for space-constrained systems.
- Reliable Chipset: Built around the ASIX MCS9865 serial communication controller, ensuring stable and efficient data transmission.
- Single Voltage Operation: Designed for 5V PCI bus slots only, ensuring electrical stability and compatibility with standard PCI systems.

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### 3. Technical Specifications

Hardware Controller: ASIX MCS9865 Serial Communication Controller
Bus Interface: PCI (5V only)
Bus Compatibility: 32-bit PCI bus, 33 MHz, 5V signaling
Number of Ports: 1 shared COM port (accessible via 2 DB9 connectors)
Interface Standards: RS232 / RS422 / RS485 (selectable per port)
Baud Rate: 50 bps to 115,200 bps
Connector Type: Two DB9 male connectors
Dimensions:
- AP2T2-3 Card: 75 mm (W) × 90 mm (L)
- AP1T2 Reference Model: 100 mm × 97 mm (standard PCI bracket)
Voltage Requirement: 5V only
Operating Temperature: 0°C to 55°C
Storage Temperature: 0°C to 65°C
Operating Humidity: 10% to 95% RH (non-condensing)
Storage Humidity: 5% to 95% RH (non-condensing)
Material: Industrial-grade PCB with gold-plated PCI edge connector
Mounting Options: Standard PCI bracket; optional low-profile bracket available upon request

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### 4. Functionality

The AP2T2-3 functions as a shared-port PCI serial communication card, allowing two physical DB9 connectors to access a single logical COM port. This design is particularly suited for polling and acknowledgment (Poll & Ack) communication schemes, where multiple devices share a single communication channel in a controlled sequence.

Each connector can be configured independently via DIP switches to operate in RS232, RS422, or RS485 mode, providing maximum flexibility for mixed-environment serial communication.

Typical Use Cases:
- Industrial automation and control systems
- Data acquisition and monitoring equipment
- Serial device networking and communication hubs
- Embedded PC-based control systems
- Legacy system integration requiring RS232/422/485 interfaces

Compatibility:
- Fully compatible with major operating systems including Windows 2000, XP, Vista, Windows 7/8, and Linux distributions.
- Supports both 32-bit and 64-bit OS environments (driver-dependent).

Communication Modes:
- RS232: Standard asynchronous serial communication for point-to-point connections.
- RS422: Differential signaling for long-distance, high-speed communication.
- RS485: Multi-drop communication supporting up to 32 devices on a single bus.

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### 5. Components & Accessories

Included Components:
- 1 × AP2T2-3 PCI Serial Card
- 1 × Standard PCI bracket (pre-installed)
- 1 × User manual or quick installation guide
- 1 × Driver CD (for Windows and Linux)

Optional Accessories:
- Low-profile PCI bracket (for compact or small form factor PCs)
- DB9-to-terminal block adapter (for industrial wiring)
- Shielded serial cables (RS232/422/485 compatible)

Connectors:
- 2 × DB9 male connectors (shared COM port)
- Each connector configurable via DIP switch for RS232, RS422, or RS485 operation

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### 6. Installation & Setup

System Requirements:
- Available 5V PCI slot on the host computer
- Supported operating system (Windows 2000/XP/Vista/7/8 or Linux)
- Administrative privileges for driver installation

Installation Steps:
1. Power off the host system and remove the cover.
2. Insert the AP2T2-3 card into an available 5V PCI slot.
3. Secure the card using the bracket screw.
4. Power on the system; the PCI BIOS will automatically assign I/O, memory, and IRQ resources.
5. Install the appropriate driver from the included CD or download from the manufacturer’s website.
6. Configure the DIP switches to select the desired interface (RS232, RS422, or RS485) for each connector.
7. Connect serial devices using the DB9 connectors.

Configuration Options:
- DIP Switch Settings: Used to select the communication mode for each connector.
- Software Configuration: COM port number and communication parameters (baud rate, parity, stop bits) can be set via the operating system’s device manager or terminal software.

Mounting Options:
- Standard PCI bracket for desktop or industrial PC chassis.
- Optional low-profile bracket for compact enclosures.

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### 7. Performance & Capabilities

Data Transmission Rate: 50 bps to 115,200 bps (configurable per port)
Signal Integrity: High-quality differential signaling for RS422/RS485 ensures reliable communication over long distances.
Shared Port Operation: Two connectors share one logical COM port, enabling dual-connector access for polling-based communication systems.
Interrupt Handling: Dual IRQ mapping assigned automatically by PCI BIOS for efficient resource management.
I/O and Memory Mapping: Fully managed by PCI BIOS, eliminating manual configuration.
Performance Stability: The ASIX MCS9865 controller provides stable throughput and low latency for continuous data exchange.
Limitations:
- Operates only on 5V PCI slots (not compatible with 3.3V-only PCI or PCIe slots).
- Shared port design means both connectors cannot transmit simultaneously; intended for Poll & Ack or controlled access environments.

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### 8. Standards & Compliance

Electrical Standards:
- Complies with PCI Local Bus Specification (Revision 2.2 or later)
- 5V signaling voltage standard

Communication Standards:
- RS232 (EIA/TIA-232)
- RS422 (EIA/TIA-422)
- RS485 (EIA/TIA-485)

Environmental Compliance:
- Operating temperature: 0°C to 55°C
- Storage temperature: 0°C to 65°C
- Humidity: 10%–95% RH (operating), 5%–95% RH (storage)

Regulatory Compliance:
- Designed to meet CE and FCC Class B requirements (typical for industrial communication cards)
- RoHS-compliant materials used in PCB and components

Industry Standards:
- Compatible with industrial automation communication protocols utilizing RS232/422/485 interfaces
- Supports standard serial communication parameters (baud rate, parity, stop bits, data bits)

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### 9. Additional Information

Warranty:
- Standard manufacturer warranty (typically 1 year, depending on region and distributor) covering defects in materials and workmanship.

Technical Support:
- Provided by Rayon Technology Co., Ltd. via email and phone.
- Driver updates and documentation available on the official website.

Maintenance:
- No periodic maintenance required beyond standard dust cleaning and connector inspection.
- Ensure proper grounding and shielding for optimal performance in industrial environments.

Firmware & Driver Updates:
- Updated drivers for Windows and Linux available from the manufacturer’s website.
- Firmware updates (if applicable) can be applied via software utility provided by Rayon Technology.

Related and Upgrade Products:
Rayon Technology offers a range of compatible and enhanced PCI serial communication cards:
- AP102-I: PCI card supporting two ground-isolated RS232 ports.
- AP132-I: PCI card supporting two ground-isolated RS422/RS485 ports.
- AP301-I: PCI card supporting one RS232 and one ground-isolated RS232/422/485 port.
- APLOG301-I: PCI card supporting monitored RS232 to ground-isolated RS232/422/485 conversion via two serial ports.
- AP112-I: PCI card supporting two ground-isolated RS232/RS422/RS485 ports.
- AP132: PCI card supporting two RS422/RS485 ports.
- APCON301-I: PCI card supporting RS232 to ground-isolated RS232/RS422/RS485 ports.

Trademark Notice:
All product names, trademarks, and registered trademarks are the property of their respective owners.

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### Summary

The Rayon Technology AP2T2-3 PCI 1-Port RS232/422/485 Shared Port Card (5V Only) is a robust, industrial-grade communication interface card designed for systems requiring flexible serial connectivity. Its unique shared-port architecture allows two DB9 connectors to access a single COM port, making it ideal for polling-based communication systems and industrial control applications.

With support for multiple serial standards (RS232, RS422, RS485), configurable DIP switches, and automatic PCI resource allocation, the AP2T2-3 delivers both versatility and ease of integration. Its compatibility with major operating systems and optional low-profile bracket further enhance its adaptability across diverse computing environments.

Engineered with the reliable ASIX MCS9865 controller and built to meet industrial environmental standards, the AP2T2-3 ensures stable, high-quality serial communication performance for demanding applications.

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Manufacturer: Rayon Technology Co., Ltd.
Model: AP2T2-3
Type: PCI 1-Port RS232/422/485 Shared Port Card (5V Only)
Dimensions: 75 × 90 mm
Interface: RS232 / RS422 / RS485 (selectable)
Baud Rate: 50–115,200 bps
Operating Temperature: 0°C–55°C
Compatibility: Windows 2000/XP/Vista/7/8, Linux
Connector: 2 × DB9 male (shared COM port)
Voltage: 5V PCI bus only

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In essence, the AP2T2-3 is a compact, reliable, and configurable PCI serial communication solution tailored for industrial and embedded applications that demand flexible serial interface options and stable performance within a 5V PCI infrastructure.