Combining RISCOS and Windows 11 Pro in a single FAST system The ECOS 11 is an internal companion system that extends the ECOS concept into the Windows environment, specifically Windows 11 Pro. Designed for integration into RISCOSbits FAST ITX systems, it provides the ability to run modern Windows software alongside RISC OS in a tightly integrated configuration. It uses an Intel Alder Lake-N97 processor with four cores, running at a base clock of 2.0 GHz and boosting up to 3.6 GHz. The standard configuration is supplied with 12 GB of RAM, and storage is provided by a 256 GB SSD, with upgrade options available up to 8 TB for applications requiring large capacity. Connectivity includes Wi-Fi and Ethernet internal networking link to the host RISC OS system for file sharing and interoperability. Video output is handled by dual 4K HDMI ports, allowing for multi-monitor Windows setups. ECOS11 is powered directly from the host motherboard, requiring no additional external power supplies or cables. Running Windows 11 Pro, the ECOS11 supports the full range of Windows applications - from office suites and graphics software to specialist engineering tools - while allowing users to maintain the advantages of RISC OS. This makes it particularly useful for workflows that require modern software capabilities alongside the efficiency, speed, and compatibility of RISC OS. The system operates entirely in parallel with RISC OS, meaning both can be accessed at the same time through the integrated network connection. Technical Specification Processor Speed: Intel N97 up to 3.6GHz Memory: 12GB SSD Storage: 256GB upgradeable to NVMe drive up to 8TB Networking: Internal gigabit ethernet port and integrated WIFI USB ports: 3 internal Audio/Video: Internal twin full sized HDMI port with audio 4K HDMI graphics OS and Software: Windows 11 Pro Case: Contained within FAST ITX case Options: Optional NVMe drives