[...] is used to discovers and shows MNDP (MikroTik Neighbor Discovery Protocol) or CDP (Cisco Discovery Protocol) devices.
More Description of those buttons:
Connect - it's easy to understand. it's used to Connect to the router.
Save - to save address, login, password and note. Saved entries are listed at the bottom of loader window.
Remove - to remove selected entry from saved list
Tools... - Allows to run various tools: removes all items from the list, clears cache on the local disk, imports addresses from wbx file or exports them to wbx file.
Connect To: - destination IP or MAC address of the router
Login - username used for authentication
Password - password used for authentication
Keep Password - if unchecked, password is not saved to the list
Secure Mode - if checked, winbox will use TLS encryption to secure session
Load Previous Session - if checked, winbox will try to restore all previously opened windows.