When looking for a replacement laptop adapter, check that the connector is going to fit the laptop’s power port. All laptops use DC power connectors, but not all connectors are going to be the same.

Laptop Connector Types

Description
Cylindrical Connectors Known as barrel connectors, sleeve connectors, tip connectors, and coaxial power connectors; they are an insulated, hollow cylinder that connects to the laptop power port
Snap and Lock Connector Also known as Kycon 3-pin and 4-pin DC power plugs; this connector has three or four pins surrounded by a thin, metal cylinder
Molex Connector Often used on personal computers to supply power; several insulated electrical wires are encased by a flat, plastic rectangular case with 3, 4, or 6 terminals
USB connector Consists of a hollow, rectangular metal tip, inside of which are two or more flat metal pins

Some name brand companies will have their own specialized connector tips for their laptop adapters.Acer Aspire 1810T AC Adapter.This can make the search for an affordable adapter more difficult, but not impossible. The cylindrical connector is the most common type of connector used in laptops. Laptops and electronic devices may also commonly use USB plugs for their power ports. Several types of USB connectors are in use including, Type A, Type B, Mini A, Mini B, Micro A, and Micro B.
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