Abstract: The invention relates to a power adapter comprising a first prong (12) rotatable between a stowed configuration and a deployed configuration; and a second prong (13,14) rotatable in an opposing direction between a stowed configuration and a deployed configuration. A deployment mechanism associated with the first and second prongs (12,13, 14) causes their movement between the stowed and the deployed configurations. The deployment mechanism comprises a cam (see FIG. 10) coupled to at least one of the first and second prongs (12,13, 14) and arranged to act on the other prong such that movement of the cam translates to rotation of the prongs. It will be appreciated that the invention provides for a collapsible power adapter which is smaller, more user-friendly and cost effective that conventional power adapters.