The rROK 5520 Series is a high-performance rolling stock edge AI computer designed for railway, transportation industrial applications. Powered by Intel® Core™ Processors (Series 2) with support for advanced NVIDIA RTX™ Ada MXM options, the platform delivers exceptional computing power for AI inference, video analytics, communication gateways, and intelligent transportation systems. Its rugged 19-inch 2U rackmount design is engineered for harsh environments, offering fanless models with EN 50155, EN 45545-2, CE, and FCC certifications. The rROK 5520-WIC7S features extensive I/O integration, including up to seven PoE ports, 2.5GbE LAN, CAN FD, serial communication, GNSS, DI/DO, and up to four 5G/LTE modules for flexible connectivity. With support for up to eight removable SSDs, PCIe Gen 4 expansion, wide-range DC 24V to 110V isolated power input, and intelligent ignition control, it ensures reliable operation in demanding railway deployments. Combining AI-ready performance, scalable storage, and railway-grade durability, the rROK 5520 Series is purpose-built to accelerate next-generation smart rail, surveillance, and edge computing solutions.