Features: Experience seamlessly cooling management with the PWM Fan Emulator 4 in 1 port. For any customization PC build enthusiasts to optimizes their system's airflows. This fan Emulator ensures durability and consistent performances, allowing you to connect and control up to four fans simultaneously. or computer hobbyists and professional who demand precise in their heat management solution. For gaming setups, workstations, and any scenario requiring advanced cooling strategies. Specifications: Item: PWM Fan Emulator Size：about 5x2x2CM/1.97x1.97x0.79in Package Includes: 1PC PWM Fan Emulator note: Please allow 1-2cm errors due to manual measurement,please make sure that do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color the item.