The ULL PCIe DMA Controller from Orthogone Technologies is a bidirectional data transfer IP core that excels in high-speed communication between host CPUs and FPGAs over PCIe. With a round-trip time optimized for ultra-low latency applications, this controller leverages a kernel-bypass architecture for efficient data movement in Linux environments. Its design is especially suited for high-frequency trading, networking, and HPC systems, where latency becomes critical. Offering a parametrizable core, it adapitates to various system designs, integrating seamlessly with existing networks and enhancing data throughput and system performance.