Dell 378-3853 is an AC adapter for equipment with matching electrical requirements and connections. It provides a rated output of 19.5 V and has a specified power rating of 65 W, identifying the power requirements to check when choosing an external adapter.
Its listed output connection is a 3-pin, 7.4 mm connector; the listing also identifies the connector type as C6. Check that the equipment accepts 19.5 V and matches the stated connector details before use. These specifications identify this exact Dell model without establishing compatibility with particular computers or other equipment.