Lamptron FC-6 20 Watts Per Channel 4 Channel Multi-Color Fan Controller - Black FC-6-BK
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Amazon.co.jp: PC Fan Controller DC 12V 4 Channel Computer Fan Speed and Temperature Controller Floppy Drive CPU Fan Controller with Blue LED Light : Computers
Aerocool Touch 2000 5.25" 4-Channel LCD Touch Panel Fan Controller with E-SATA/USB
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Multi-Function PC CPU 4 Channel Fan Controller Speed Control Adjuster LCD Cooling Front Panel _ - AliExpress Mobile
Lamptron FC5V2 20 Watts Per Channel 4 Channel Multi-Color Fan Controller - Black FC-5-V2-BK