MITAC A104-4232 Module 4-PORT 16550 RS-232 PC/104

( Brand: Mitac ), ( Manufacturer Part Number: A104-4232 ), ( Part Type: Module ), ( Country Of Origin: United States ), ( Item Length: 12 )

Review MITAC 4-port Rs-232 Pc/104 Module

The **MITAC A104-4232 4-Port 16550 RS-232 PC/104 Module** is a high-performance, compact industrial communication interface designed to seamlessly integrate robust serial connectivity into compact embedded systems. Built on the trusted PC/104 form factor, this module delivers four fully isolated RS-232 serial ports, each compliant with the industry-standard **16550 UART controller**, ensuring reliable data transmission at speeds up to **115,200 baud** per port. Ideal for applications requiring multiple serial connections in space-constrained environments, such as industrial automation, data acquisition systems, medical devices, and ruggedized embedded computing platforms, the A104-4232 combines flexibility with durability.

Each of the four RS-232 ports is equipped with **optical isolation** to protect against voltage spikes, electromagnetic interference (EMI), and ground loops, making it suitable for harsh industrial or field-deployed applications. The module supports standard serial communication protocols, including **DTE/DCE auto-detection**, allowing seamless integration with a wide range of devices such as modems, sensors, PLCs, and legacy equipment. Additionally, the **16550 UART** provides a **16-byte FIFO buffer**, reducing CPU overhead and improving throughput for high-speed data transfers. The module features **configurable baud rates, parity settings, and data bits**, offering full control over serial communication parameters via software or hardware jumpers.

Designed with **industrial-grade reliability**, the A104-4232 operates within a **wide temperature range** (typically -40 C to 85 C), making it well-suited for both indoor and outdoor environments. Its **low-power consumption** and **compact PC/104 form factor** (measuring just 3.55" x 3.8" x 0.43") allow for efficient integration into embedded systems without sacrificing performance. The module includes **standard PC/104 connectors** for easy mounting and expansion, while its **backward compatibility** ensures seamless integration with existing PC/104-based platforms. Whether deployed in **automation control systems, telemetry applications, or ruggedized computing setups**, the MITAC A104-4232 delivers a dependable, high-speed serial communication solution that enhances connectivity and operational efficiency in demanding environments.

### **Pros and Cons of buying a Mitac A104-4232 4-Port 16550 RS-232 PC/104 Module**

#### **Pros**

1. **Reliability and Durability** The Mitac A104-4232 is a well-established industrial-grade PC/104 module, known for its robust construction and long-term availability. It is designed for harsh environments, making it suitable for embedded systems, automation, and industrial applications.

2. **Standardized Form Factor (PC/104)** The PC/104 standard ensures compatibility with a wide range of backplanes, expansion cards, and other PC/104 modules. This modularity simplifies system integration and reduces design constraints.

3. **High-Speed Serial Communication** The module features four **16550-compatible UARTs**, which offer full-duplex asynchronous serial communication at speeds up to **115.2 kbps** (or higher with some configurations). The 16550 is a reliable, widely supported standard, making it easier to interface with legacy or modern devices.

4. **Industrial-Grade Components** Built with components rated for extended temperature ranges (typically **-40 C to 85 C**), the module is ideal for applications in industrial, automotive, or outdoor environments where temperature fluctuations are common.

5. **Low Power Consumption** Compared to full-sized PCs, the A104-4232 consumes minimal power, making it suitable for battery-powered or energy-efficient embedded systems.

6. **Legacy and Future Compatibility** The RS-232 standard remains relevant in many industrial and automation applications, even as USB and Ethernet dominate consumer markets. This module bridges legacy systems with modern requirements.

7. **Easy Integration with Existing Systems** Since it is a standalone serial I/O module, it can be added to an existing PC/104-based system without requiring major redesigns. This makes it a cost-effective upgrade option.

8. **No Moving Parts** Unlike mechanical interfaces, UART-based communication is entirely electronic, reducing wear and tear over time.

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#### **Cons**

1. **Limited Data Transfer Speed** While the 16550 UART supports up to **115.2 kbps**, this is significantly slower than modern Ethernet (100 Mbps ) or USB (high-speed variants). For high-speed data acquisition or networking, this module may be insufficient.

2. **No Built-in Networking** Unlike many modern embedded modules, the A104-4232 lacks Ethernet or Wi-Fi capabilities. If networking is required, an additional module would be needed.

3. **Obsolete Standard (RS-232)** RS-232 is being phased out in favor of USB, Ethernet, or USB-to-serial converters in many applications. While it remains useful for legacy systems, newer designs may prefer more modern interfaces.

4. **Limited Expansion Options** As a basic serial I/O module, it does not support PCI, USB, or other high-level interfaces. Additional modules (e.g., PCI-to-PC/104 bridges) may be required for modern peripherals.

5. **Potential Obsolescence Risks** While Mitac has maintained this product for years, long-term availability cannot be guaranteed. Some suppliers may discontinue support over time, leading to potential stocking issues.

6. **No Onboard Storage or Processing Power** Unlike modern embedded computers (e.g., Raspberry Pi, BeagleBone), this module lacks built-in storage (e.g., eMMC, SSD) or a full CPU for complex processing. It is essentially a serial I/O expansion card rather than a standalone computer.

7. **Manual Configuration Required** Unlike plug-and-play USB devices, UART settings (baud rate, parity, stop bits) must be manually configured in software, which can introduce errors if not set correctly.

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### **Conclusion**

The **Mitac A104-4232 4-Port 16550 RS-232 PC/104 module** is a **reliable, low-cost solution for industrial serial communication** where legacy RS-232 interfaces are still required. It excels in environments needing **durability, modularity, and simple serial I/O expansion**, particularly in automation, testing, or embedded systems where speed is not a critical factor.

However, if your application requires **high-speed data transfer, networking, or modern interfaces (USB, Ethernet, GPIO)**, this module may be **underpowered or outdated**. In such cases, a more modern embedded platform (e.g., a PC/104 module with Ethernet, USB, and higher-speed serial options) would be a better choice.

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### **Recommendation**

- You need **four reliable RS-232 ports** for legacy or industrial serial communication.

- Your system is **PC/104-based** and requires simple serial expansion.

- You operate in an **industrial or harsh environment** where reliability and temperature resistance are critical.

- Budget is a **primary concern**, and you do not need high-speed or modern interfaces.

- You require **higher data speeds** (e.g., USB 2.0/3.0, Gigabit Ethernet).

- Your application needs **modern interfaces** (USB, GPIO, CAN, etc.).

- You are designing a **new system** and want future-proofing with more advanced features.

- You need **onboard storage, processing power, or networking** capabilities.

- **PC/104 Modules with USB & Ethernet** (e.g., Advantech, Kontron, or Moxa industrial boards).

- **USB-to-Serial Adapters** (if only a few ports are needed and USB is acceptable).

- **Modern Embedded Computers** (e.g., Raspberry Pi with serial headers, BeagleBone, or Intel NUC for more processing power).

For most **new industrial or automation projects**, pairing this module with a **modern PC/104 carrier board** that supports USB, Ethernet, and higher-speed serial (e.g., USB-to-serial converters) would provide a better balance of legacy support and future flexibility.

Details:

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• $120.00-$238.00

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• brand: Mitac
• mpn: A104-4232
• part type: Module
• country of origin: United States
• item length: 12

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