SI-Trusted OEM Power Supply Proven and widely used by name-brand system integrators (SI); optimized for long-term stability and performance. Cost-Effective Brown Box Version Simplified OEM packaging with no frills, designed for builders who prioritize value and reliability over flashy aesthetics. ATX 3.1 & PCIe Gen 5 Ready Supports modern high-performance GPUs with native 12VHPWR (12+4 pin) connector ideal for RTX 50 series and AMD RX 7900/7700 class cards. Straight Cable Output Design Durable non-modular layout for straightforward installation and fewer connection points, reducing failure risk. Stable 850W Continuous Output 80+ Gold certified efficiency with built-in protections (OVP/UVP/OCP/OTP/SCP), delivering consistent and safe power delivery. SI-Built, Quality Assured Backed by years of real-world deployment in prebuilt systems; engineered for long-lasting performance under daily use.