The Genuine Apple UK Power Adapter Extension Cable is a white AC/Standard unit designed specifically for Apple MacBook and MagSafe Charger compatibility. With a length of 4.33 inches and a width of 1.97 inches, this extension cable is a convenient accessory for various Apple devices including MacBook Air, iBook, PowerBook G4, MacBook Pro, and MacBook. Made in China, this cable is a reliable choice for those in need of an extra power adapter extension for their Apple devices.