The Montech AX140 PWM BLACK AX 140 ARGB Fan is a high-performance case fan with a 140mm diameter and a maximum fan speed of 1600 RPM. It features a 4-pin PWM and 3-pin ARGB power connection, making it compatible with a variety of systems. The fan utilizes a HDB bearing type and is constructed from durable plastic material. With a sleek black color and customizable RGB fan light color, this fan is both functional and stylish, providing optimal airflow volume of 90.5 CFM for efficient cooling in computer systems.