Key benefits Expand serial connectivity efficiently: XR17V358 series Multi I/O PCIe controller enables connecting multiple serial devices to a single host, reducing wiring complexity and hardware footprint for industrial machines. Strong compatibility with industry standards: Supports the industry standard 16C550 UART, ensuring broad compatibility with existing serial peripherals and drivers. Easy, reliable installation with strong protection: Automatic IRQ address allocation simplifies setup and avoids IRQ conflicts; builtin DCDC isolation power provides protection against ground loops and electrical interference. Flexible serial communication: Supports asynchronous full duplex communication over twisted pair or shielded cable, enabling reliable operation in varied environments. What this product is A PCIe expansion card based on the XR17V358 series Multi I/O controller for adding multiple serial ports to a PC or industrial computer. Designed to integrate multiple Serials devices into systems with ease, suitable for engineers and IT professionals handling serialheavy applications. Form factor: PCIe expansion card. Specific housing size and materials are not specified in the provided brief. Key specifications and attributes Controller: XR17V358 series Multi I/O PCIe controller. UART compatibility: Industrystandard 16C550 UART. Installation: Automatic IRQ address allocation to simplify setup and minimize conflicts. Power and protection: Builtin DCDC isolation power for improved protection against ground interferences. Communication: Asynchronous full duplex over twisted pair or shielded cable. Performance and reliability Enables stable, multidevice serial interfacing in industrial machines and IT environments. Designed to reduce wiring complexity and improve installation reliability through automatic IRQ allocation and isolation power. Supports common serial device ecosystems through 16C550 UART compatibility. Size, materials, and mounting Form factor: PCIe expansion card. Mechanical size and enclosure materials are not specified in the available information. Use scenarios Factory floor instrumentation: Connect multiple RS232 devices (sensors, PLCs, measurement instruments) to a single PC for data logging and control, with reliable ground isolation and straightforward installation. Industrial automation control: Integrate several serial peripherals such as barcode readers, CNC interfaces, or legacy controllers into an industrial PC or controller system, benefiting from automatic IRQ management and robust noise protection. R&D and testing lab: Set up a workstation with multiple serial instrument interfaces for rapid prototyping, testing, and data acquisition without rearranging existing systems. Notes All statements reflect the product brand, specifications, models, and functions as provided. No additional features or changes have been added beyond the original description.