1.Convert 3-pin (+5V) ARGB Fans to 4-pin (+12V) RGB Capable Motherboard (NOT Compatible with ASRock Motherboard) 2.5V to 12V RGB transfer hub,5V ADD-RGB to 12V RGB Transfer Hub, Motherboard with 12V 4-pin Header can Contorl 5V ADD-RGB Products, Non-Compatible with Asrock Motherboard 3.5V ADD-RGB equipment can be compatible with 12V RGB motherboard. *Rainbow and breathing mode for some motherboard models are not compatible 4.Magnet & Velcro installation ,Voltage transformer from 5V to 12V, powered by SATA 5.RGB Convertor Size: About 45x45x12mm/1.7x1.7x0.47in