The HPE Aruba fan unit (R8R53A) is an essential accessory for maintaining optimal performance in network switches. This fan unit features a front - to - back airflow design, ensuring effective cooling for your equipment. It is compatible with multiple part numbers including R8P13A, R8P13A#ABA, R8P13A#ABB, R8P13A#ACC, and R8P13A#ACD. With dimensions of 5.3 inches in width, 1.6 inches in height, and a depth of 1.6 inches, it is compact yet powerful. Weighing only 5.65 ounces, this fan unit is easy to install and helps maintain a balanced performance and efficiency for your network switch.