Using this rackmount shelf is easy. First, make sure your rack is properly installed and stable. Then, slide the shelf into the 19-inch rack. Place your Aria X2 Transceiver, Aria X2 Bridge, or NET 4 devices on the shelf. You can put up to two devices at the same time. When using, avoid placing heavy objects on it beyond its weight limit. Keep the shelf in a dry and clean environment to prevent rusting of the metal housing. Regularly check the stability of the shelf and the devices on it. If you find any looseness or damage, fix it or replace parts promptly.