Hi friend.
The MA5600T supports BIOS login and authentication and is enabled by default. Click the following link to obtain the default password:
Configuring the BIOS Login and Authentication Function
NOTE: To improve device security, change the password upon the first successful login and periodically update this password. After enabling the BIOS authentication function, you must send the device back to the manufacturer for initialization once you forget the password. Therefore, keep your password secure after setting it.
Thanks.