https://wccftech.com/noctua-nh-l9a-am4-chromax-black-cpu-cooler-sff-pcs/

Noctua has introduced another addition to its Chromax line of all-black CPU coolers, the new NH-L9a-AM4 Chromax.Black, a low-profile quiet CPU cooler for AMD’s Ryzen-based HTPCs and Small Form Factor (SFF) builds. Thanks to the same proven heatsink design and NF-A9x14 PWM fan as the original NH-L9a-AM4, it stays true to the same successful formula of fusing a height of only 37mm with strong performance and excellent quietness of operation, as well as 100% RAM and PCIe compatibility.

Recommended by more than 50 international hardware websites and magazines, the NH-L9a-AM4 is renowned as being one of the best low-profile coolers for AMD Ryzen CPUs and APUs such as the popular 3700X, 3600, 3400G or 3200G. Due to its slim 23mm heatsink and the NF-A9x14 low-profile fan that measures only 14mm in thickness, the cooler stands a mere 37mm tall, which makes it ideal for use in compact HTPCs or Small Form Factor cases that offer minimum clearance for CPU coolers.