Akasa 4cm 40mm Black PC Chassis Fan with 3-Pin 12v 40x40x10mm 5400rpm 5.52CFM. Akasa 6" Mini Desktop PC USB Powered Fan Adjustable Stand 3 Blades. Akasa Flexa FP5H PWM Splitter Hub Cable - 5 x PWM fans from a single Mobo Header.
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