The NH-D9L is a premium dual-tower cooler that offers excellent silent cooling performance at an overall height of only 110mm. The comparatively low height (15mm less than classic 9cm coolers like the NH-U9S) not only offers full 3U compatibility, but also makes the NH-D9L an ideal solution for compact HTPC and small form factor cases where the airflow runs parallel to the motherboard. Thanks to its footprint of 95x95mm, the NH-D9L does not hang over the memory banks or PCIe slots on all Intel and most AMD based ITX motherboards. The included NF-A9 premium fan, whose speed can be controlled fully automatically via PWM, ensures excellent running smoothness. With a second, optionally available NF-A9 fan, the cooling performance can be further improved in dual-fan operation.