The Dell 450-ALSO is a 240 W external AC power adapter for Dell laptops. It powers the computer while the battery charges, so you can continue working with the laptop connected to AC. Its 7.4 mm DC plug identifies the connector required by this adapter variant.
GaN (gallium nitride) technology and a small-form-factor design define this model. The compact form is useful when connecting a compatible laptop to AC power at a desk or another location with mains access.
The listing names Dell Alienware and Precision as compatible families. Check that your system uses the 7.4 mm connection and requires a 240 W adapter; compatibility is limited to systems meeting those requirements. This description refers to Dell part 450-ALSO and its stated power rating and connector.
