YWBL-WH 2pcs USB Fan Speed Controller, DC 4 to 12V USB Fan Stepless Speed Governor Controller Regulator with Switch Module Input DC 4-12V to 2.5-8V 5W 5V
Akozon USB Fan Speed Controller - Precise Airflow Regulation with Adjustable Knob for 5V USB Fans & Multiple Power Sources
USB Fan Speed Controller (ATX 4-Pin/MOLEX), 3-Speed 5V/9V/12V with LED, 50cm, key Control, Black PVC Box for DIY Cooling
Karlak Adjustable USB Fan Speed Controller, Stepless Governor Output 2.5-8.0V, Aluminum Material, Suitable for Common 5V USB Fan in Market
4PCS 5W Power USB Fan Speed Controller For USB Fan and LED Light