Page: 41. PRIME Z490-P 2-7 Chapter 2 2. Place the motherboard into the chassis, ensuring that its rear I/O ports are aligned to the chassis’ rear I/O panel. 2.1.5 Motherboard installation 1. Install the ASUS I/O Shield to the chassis rear I/O panel. Some sharp edges and points might cause physical injury.. "/>Asus prime z490-p manual