When adding a new Adyen payment device for a site, the required info to populate the form can be found in your Adyen account.
Name: Find on Adyen site. Point of sale > Terminals > Click the specific device > About this terminal
Port Number: 8443
Host: The static IP address set on the device.
See Adyen documentation for details, Network configuration | Adyen Docs
Example for the V400m device:
Press 9 then Enter to access the Admin menu. Find the admin passcode on the Adyen site. Point of sale > Terminals > Click the specific device > Passcodes > Decrypted
Select Network
Select Wi-Fi
Click the info icon
Click IP settings
Enter IP info
Key Identifier/Password/Key Version: Find on Adyen site. Point of sale > Terminals > Click the specific device > Integrations > Encryption key > Key identifier > Decrypted
Crypto Version: 1
GC Tip: Determines if the device prompts for customer to enter a tip or not
Disabled: Determines if the device can be used by the POS or not