Stw Multi-function Pc Cpu 4 Channel Fan Controller Speed Control Adjuster Lcd Cooling Front Panel - Fans & Cooling - AliExpress
Amazon.com: Kingwin Fan Controller 4 Channel w/ LED. Controls up to 4 Sets of PC Computer Fans, Independent Turn Knob Control, and Fits 3.5 Inch Drive Bay. Easy Setup, and Easy Control
Derale 16795 PWM Fan Controller
4 Channel Turn Knob Multi-fan Cooling Controller Front Panel 3.5" 4 Pin Connector Cpu Hdd Temp Pc Fan Speed Controller - Instrument Parts & Accessories - AliExpress