A protective cover is provided to protect a portable electronic device, including a display surface that includes a display screen. The protective cover may include a computing accessory such as a keyboard. One or more magnets in the protective cover may be configured to align with magnets located in the portable electronic device. Upon placing the protective cover over the display surface, an attraction force between magnets can secure the protective cover, including the computing accessory, over the display surface. The magnets may be located proximate edges of the protective cover a portable electronic device, and the attraction force may be the primary or only mechanism for securing the protective cover in place. Optionally, the attractive forces pass through the display surface without also passing through a side or peripheral surface of the portable electronic device.