LeKuo MW84Z41 M.2 to 4-Port RS422/485 Serial Card: Industrial-Grade Multi-Serial Port Expansion Solution for Mini Industrial PCs
Addressing pain points such as insufficient serial ports on mini PCs and embedded industrial control computers, traditional PCI/PCIe serial cards being too bulky for installation, difficulties in connecting multiple RS422/485 peripherals simultaneously, failure to meet industrial-grade wide temperature and anti-interference requirements, and poor compatibility and cumbersome installation of serial port expansion solutions, The LeKuo MW84Z41 features a compact M.2 2280 design based on a high-speed PCIe 2.0 x1 lane. A single card provides 4-port RS422/485 serial expansion, offering plug-and-play compatibility with Windows and Linux systems. It operates stably within a wide temperature range of -40°C to 85°C, perfectly meeting multi-port communication needs across various scenarios such as industrial automation, smart terminals, data acquisition, and embedded devices.
M.2 Mini Form Factor: Compact Size with 4-Port Serial Expansion
Traditional serial expansion solutions generally suffer from three major issues: full-height or half-height cards do not fit into mini-ITX cases; USB serial ports are prone to speed drops and instability; and single cards can only expand 1–2 serial ports, making it difficult to meet the demands of concurrent multi-device operation.
The LeKuo MW84Z41 is built on a technical foundation of an M.2 B+M Key interface, a PCIe 2.0 x1 lane, and a high-performance multi-serial port control core, achieving breakthroughs in both form factor and performance:
1. Ultra-Compact Design
Adopting the standard M.2 2280 form factor, it directly utilizes an idle M.2 slot on the motherboard, taking up no chassis space and not obstructing other components. It can be easily installed in mini industrial PCs, ITX systems, and embedded devices.
2. 4-Port Serial Expansion
Provides 4 sets of RS422/485 interfaces, allowing simultaneous connection of 4 industrial serial peripherals to meet multi-device connectivity needs
Reliable Industrial-Grade Communication Guaranteed
1. Interface and Transmission Specifications
● Host Interface: M.2 (B+M Key), PCIe 2.0 x1
● Device Interface: 4×1.25mm 9-pin, with dedicated adapter cable
● Dimensions: M.2 2280 standard size, compatible with mainstream M.2 slots
● Baud Rate Range: Supports 1200 bps to 230,400 bps, covering all industrial serial communication speed scenarios
2. Industrial-Grade Stability Design
● Wide Temperature Operation: Operating temperature range of -40°C to 85°C; withstands extreme high and low temperatures, ensuring stable, uninterrupted operation in industrial environments around the clock
● Standard Compatibility: Strong hardware compatibility; works seamlessly with any motherboard or embedded platform
● Flexible Signaling: Supports RS422/485 signals to accommodate the wiring requirements of various industrial devices
3. System Compatibility and Ease of Use
● System Support: Fully compatible with Windows, Linux Kernel 2.4/2.6 and later versions, and supports domestic operating systems such as Kylin and Tongxin
● User-Friendly: Easy for beginners to get started
Real-World Applications: One-Stop Solution for Industrial Serial Communication Across Multiple Fields
1. Industrial Automation Control
Industrial equipment such as PLCs, inverters, servo drives, and sensors widely utilize RS485 communication; however, traditional host serial ports are insufficient for centralized management.
● Solution Value: A single card expands to 4 RS422/485 ports, allowing a single host to simultaneously manage multiple industrial devices, simplifying cabling and reducing costs
● Performance: Stable transmission at high baud rates of 230–400 bps
2. Smart Terminals and Commercial Equipment
Commercial devices such as cash registers, barcode scanners, electronic scales, digital displays, and receipt printers commonly require RS422/485 interfaces.
● Solution Value: The compact M.2 form factor saves chassis space, while 4 serial ports support simultaneous connection of multiple devices, making it ideal for self-service terminals and retail equipment.
● Practical Application: Simple operation with no complex configuration required, reducing operational and maintenance costs.
3. Industrial Data Acquisition
Scenarios such as environmental monitoring, power data collection, meter readings, and IoT data uploads require simultaneous connectivity with multiple data acquisition devices.
● Solution Benefits: 4-port serial expansion; wide-temperature design suitable for outdoor and high-temperature cabinet environments; long-term stable operation
● Performance: Hardware-level data buffering ensures no data loss during batch transfers, meeting 24/7 continuous data acquisition requirements.
4. Embedded and Mini Industrial Control Devices
Mini PCs, NUCs, and embedded industrial control computers feature only M.2 slots and lack PCIe expansion slots, limiting serial port expansion.
● Solution Benefits: Directly utilizes an idle M.2 slot to expand to 4 serial ports; requires no chassis modifications and enables tool-free, rapid installation
● Practical Applications: Suitable for compact platforms such as medical terminals, security and industrial control systems, and in-vehicle devices, providing essential serial communication capabilities.
Summary
The LeKuo MW84Z41 M.2 to 4-Port RS422/485 Serial Card features a compact M.2 2280 form factor, 4 serial ports, and industrial-grade wide temperature support as its core advantages, completely resolving serial port expansion challenges for mini PCs and embedded industrial control computers. It supports all baud rates from 1200 bps to 230,400 bps on Windows and Linux, and operates stably within a wide temperature range of -40°C to 85°C. Whether for industrial automation, smart terminals, data acquisition, or expanding embedded devices, it provides a compact, highly stable, and multi-concurrent serial communication solution, making it the ideal choice for multi-port serial expansion in both industrial and commercial applications.