When setting up your HP Printer 4520, a crucial aspect is configuring the Wi-Fi connection. The printer must be connected to a wireless network for seamless printing from multiple devices. To achieve this, you need to have the network's SSID (network name) and the Wi-Fi password (WPA or WEP key) at hand. During the setup process, your printer will scan for available networks. Once you select your network and provide the password, the printer will establish a connection.