Add additional chassis cooling with a 9mm high flow case fan This 9.25cm x 9.25cm x 25mm (26 RPM) computer case fan helps prevent computer systems from overheating, thereby increasing efficiency and stability. Featuring a TX3 motherboard connection, the FAN9X25TX3H is a high-performance way to avoid overheating and system failure. The StarTech.com Advantage - A dual ball bearing design ensures reliability and longer life - A built-in tachometer allows for easy monitoring of the fan performance - Higher performance fan with Increased air flow for warmer environments or higher performance components