Supermicro 40 mm counter-rotating fan (FAN-0156L4). Delta counter-rotating fan - 40 x 40 x 56 mm. Compatible with cases from the CSE-113TS, CSE-514, and CSE-815TS series. Fan speed: 13,000 rpm / 11,000 rpm. Supermicro certified. Acoustic noise level 61 dBA. Maximum airflow rate 25.2 CFM, 4-pin connector. The Supermicro brand designs, develops, and produces optimized server solutions based on the x86 architecture. The company's extensive product range includes the industry's most comprehensive selection of server, high-end workstation, and storage systems, as well as energy-efficient server components known as Server Building Blocks Solutions, which include server boards, chassis, and power supplies. Additionally, Supermicro offers powerful Universal I/O (UIO) expansion card technology and other system accessories. A strong emphasis is always placed on energy efficiency to provide effective solutions optimized for a wide range of customer applications.