The Dell 492-BBCQ is a 45 W AC adapter for powering compatible laptops. Its 19.5 V output suits systems that require an adapter with these specifications, making it a replacement option for those setups.
It has a 3-pin connection and a 4.5 mm connector. Check that the laptop setup uses the stated output and connector when choosing an adapter.
Package contents: the adapter only. The C6 power cord mentioned in the product name is not included.