The Noctua NH-L9a-AM4 is a quiet premium cooler designed for AMD-based HTPCs and small form factor systems. With an ultra-slim height of just 37 mm, the NH-L9a-AM4 is ideal for particularly compact cases. Thanks to its footprint of 92x114 mm, the cooler offers excellent compatibility with tall memory modules and other components on mini-ITX motherboards. The custom SecuFirm2 mounting system for AM4 makes installation a breeze. The highly optimized NF-A9x14 premium fan with PWM support for automatic speed control provides outstanding operational quietness. With the included Low-Noise Adapter (L.N.A.), the speed of the NF-A9x14 fan can be reduced from 2,500 RPM to 1,800 RPM. This allows for the creation of nearly silent systems with CPUs under 65 watts TDP. The package is completed with Noctua's renowned NT-H1 thermal paste. The NH-L9a combines all the advantages of larger Noctua coolers into an extremely compact, high-quality complete package for slim HTPC systems.