The FSP Hydro PTM PRO series offers high efficiency and longevity to your PC build. Our proprietary conformal coating protects the power supply from dust, humidity, stains, and harsh environments. The Hydro PTM PRO has been designed to reliably operate at a relative humidity of up to 95%. It also features a semi-fanless eco mode that will suspend fan operation until the load has exceeded 30%. This feature can be controlled with the simple flick of a switch located next to the on/off button for easy access. This model also includes fully modular black ribbon cables for DIY enthusiasts looking to create cleaner builds. The FSP Hydro PTM PRO is a top-of-the-line power supply that delivers function, efficiency, and style making it a great addition to any system.