SIEYIO 1U Modular Power Supply Unit — 250W / 300W / 400W / 500W / 600W / 700W / 850W, 40mm Low-Noise Fan

SIEYIO compact 1U modular power supplies available in 250W, 300W, 400W, 500W, 600W, 700W and 850W variants. Each unit uses a 40mm low-noise fan with curved blades and an intelligent temperature control system that adjusts fan speed for balanced, stable cooling and reduced audible noise. The slim 1U form factor is designed for installations with limited space and simplifies rack or chassis layout. Voltage support varies by module: the 300W and 400W models do not support 110V, while the 500W, 600W, 700W and 850W modules do support 110V. Attention: the package does not include a power plug.